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Condensed Statements of Cash Flows (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Cash flows from operating activities: | ||
| Net loss | $ (781,265)us-gaap_NetIncomeLoss | $ (254,410)us-gaap_NetIncomeLoss |
| Adjustments to reconcile net loss to net cash used in operating activities: | ||
| Depreciation and amortization | 550us-gaap_DepreciationAndAmortization | 624us-gaap_DepreciationAndAmortization |
| Stock-based compensation | 145,514us-gaap_ShareBasedCompensation | 362us-gaap_ShareBasedCompensation |
| Amortization of debt discount | 49us-gaap_AmortizationOfDebtDiscountPremium | 80us-gaap_AmortizationOfDebtDiscountPremium |
| Changes in operating assets and liabilities: | ||
| Restricted cash | 4,055us-gaap_IncreaseDecreaseInRestrictedCash | 30,844us-gaap_IncreaseDecreaseInRestrictedCash |
| Prepaid expenses and other current assets | (63,512)us-gaap_IncreaseDecreaseInPrepaidExpensesOther | (2,783)us-gaap_IncreaseDecreaseInPrepaidExpensesOther |
| Accounts payable | (125,589)us-gaap_IncreaseDecreaseInAccountsPayable | 41,206us-gaap_IncreaseDecreaseInAccountsPayable |
| Accrued liabilities | (97,120)us-gaap_IncreaseDecreaseInOtherAccruedLiabilities | 9,813us-gaap_IncreaseDecreaseInOtherAccruedLiabilities |
| Accrued payroll and other compensation | (28,140)us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities | 1,079us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities |
| Net cash used in operating activities | (945,458)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (173,185)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations |
| Cash flows from investing activities: | ||
| Purchases of property and equipment | (12,278)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 0us-gaap_PaymentsToAcquirePropertyPlantAndEquipment |
| Payment for security deposit | (15,207)us-gaap_PaymentsForProceedsFromOtherInvestingActivities | 0us-gaap_PaymentsForProceedsFromOtherInvestingActivities |
| Investments in marketable securities | (3,247,509)us-gaap_PaymentsToAcquireMarketableSecurities | 0us-gaap_PaymentsToAcquireMarketableSecurities |
| Net cash used in investing activities | (3,274,994)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | 0us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations |
| Cash flows from financing activities: | ||
| Deferred offering costs | (30,321)cobu_PaymentsOfDeferredOfferingCosts | (14,982)cobu_PaymentsOfDeferredOfferingCosts |
| Proceeds from convertible notes | 0us-gaap_ProceedsFromConvertibleDebt | 210,000us-gaap_ProceedsFromConvertibleDebt |
| Debt issuance costs | 0us-gaap_PaymentsOfDebtIssuanceCosts | (24,471)us-gaap_PaymentsOfDebtIssuanceCosts |
| Proceeds from initial public offering | 10,253,484us-gaap_ProceedsFromIssuanceInitialPublicOffering | 0us-gaap_ProceedsFromIssuanceInitialPublicOffering |
| Proceeds from exercise of stock options | 55,548us-gaap_ProceedsFromStockOptionsExercised | 0us-gaap_ProceedsFromStockOptionsExercised |
| Proceeds from conversion of private placement Puts | 2,700,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement | 0us-gaap_ProceedsFromIssuanceOfPrivatePlacement |
| Net cash provided by financing activities | 12,978,711us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 170,547us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations |
| Net increase (decrease) in cash | 8,758,259us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (2,638)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease |
| Cash at beginning of period | 1,194,492us-gaap_CashAndCashEquivalentsAtCarryingValue | 145,170us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Cash at end of period | 9,952,751us-gaap_CashAndCashEquivalentsAtCarryingValue | 142,532us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Non-cash investing and financing activities: | ||
| Warrants issued in connection with bridge loans | 0us-gaap_StockIssued1 | 137us-gaap_StockIssued1 |
| Reclassification of deferred offering costs to equity | 779,707cobu_ReclassificationOfDeferredOfferingCostsToEquity | 0cobu_ReclassificationOfDeferredOfferingCostsToEquity |
| Conversion of Series B Preferred Stock to Common Stock | $ 5,400,000us-gaap_ConversionOfStockAmountConverted1 | $ 0us-gaap_ConversionOfStockAmountConverted1 |
| X | ||||||||||
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- Definition
It represents the payments of deferred offering costs. No definition available.
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| X | ||||||||||
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- Definition
Represents the value of reclassification of deferred offering costs to equity in a noncash (or part noncash) transaction. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The value of the stock converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other expenses incurred but not yet paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) of consideration paid in advance for other costs that provide economic benefits in future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The fair value of stock issued in noncash financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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