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Significant Accounting Policies - Additional Information (Detail) (USD $)
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3 Months Ended | ||
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Mar. 31, 2015
Segment
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Mar. 31, 2014
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Dec. 31, 2014
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| Significant Accounting Policies [Line Items] | |||
| Marketable investments | $ 0us-gaap_MarketableSecurities | $ 0us-gaap_MarketableSecurities | |
| Restricted cash | 13,730us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | 13,728us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | |
| Estimated useful life of all property and equipment | 3 years | ||
| Operating segments | 1us-gaap_NumberOfOperatingSegments | ||
| Valuation allowance | 100.00%crbp_DeferredTaxAssetsValuationAllowancePercentage | ||
| Uncertain tax position | 0us-gaap_LiabilityForUncertainTaxPositionsCurrent | 0us-gaap_LiabilityForUncertainTaxPositionsCurrent | |
| Impairment charges | $ 0us-gaap_AssetImpairmentCharges | $ 0us-gaap_AssetImpairmentCharges | |
| Maximum [Member] | |||
| Significant Accounting Policies [Line Items] | |||
| Cash and cash equivalents maturity period | 3 months | ||
| Minimum [Member] | |||
| Significant Accounting Policies [Line Items] | |||
| Marketable investments maturity period | 3 months | ||
| X | ||||||||||
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- Definition
Cash and cash equivalents maturity period. No definition available.
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| X | ||||||||||
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- Definition
Deferred Tax Assets Valuation Allowance Percentage No definition available.
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| X | ||||||||||
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- Definition
Marketable Securities Maturity Period 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 write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The current portion of the amount recognized for uncertain tax positions as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. No definition available.
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| X | ||||||||||
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- Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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| X | ||||||||||
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- Definition
Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. 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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- Details
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