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Summary of Significant Accounting Policies (Details Textaul) (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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Dec. 31, 2014
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| Marketable Securities, Current | $ 3,247,509us-gaap_MarketableSecuritiesCurrent | $ 0us-gaap_MarketableSecuritiesCurrent | |
| Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | 749,386us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | 838,163us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term | 4 years | ||
| Payments Of Deferred Offering Costs | $ 30,321cobu_PaymentsOfDeferredOfferingCosts | $ 14,982cobu_PaymentsOfDeferredOfferingCosts | |
| X | ||||||||||
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- Definition
It represents the payments of deferred offering costs. No definition available.
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- Definition
Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Unrecognized cost of unvested options awarded to employees as compensation. No definition available.
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- Definition
Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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