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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2010
Commitments and Contingencies Disclosure [Line Items] |  |
Minimum term of non-cancellable operating leases | 1 year |
Expiration of non-cancellable operating leases maximum year | 2019 |
Financing for leasehold improvement |  | $ 1.1
Outstanding liability related to leasehold improvements | 0.8 |
Leasehold Improvements reflected in Accrued liabilities | 0.1 |
Leasehold Improvements reflected in Other non-current liabilities | $ 0.7 |
Concord Lease |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Early termination of non-cancellable operating leases minimum period | 2015-01 |

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- Details
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- Definition Earliest period for early termination of non-cancelable operating lease. + References No definition available. + Details
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- Definition Latest period of expiration of non-cancelable operating lease. + References No definition available. + Details
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- Definition Portion of outstanding liability related to leasehold improvement reflected in accrued liabilities. + References No definition available. + Details
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- Definition Portion of outstanding liability related to leasehold improvement reflected in other non current liabilities. + References No definition available. + Details
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- Definition Minimum term of non-cancelable operating lease. + References No definition available. + Details
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- Definition Outstanding liability related to leasehold improvements current and non current. + References No definition available. + Details
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- Definition Proceeds from landlord for financing leasehold improvement. + References No definition available. + Details
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