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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commitments and Contingencies Disclosure [Line Items] |  |  |
Minimum term of non-cancelable operating leases | 1 year |  |
Expiration of non-cancelable operating leases maximum year | 2019 |  |
Operating lease, rent expense | $ 0.6 | $ 0.7 | $ 0.9
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 |  |
Purchase commitment, paid | 7.2 | 3.6 | 0.9
Future minimum purchase commitment 2013 | 2.5 |  |
Future minimum purchase commitment 2014 | 0.1 |  |
Future minimum purchase commitment 2015 | $ 0.1 |  |
Concord Lease |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Early termination of non-cancelable 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 Long Term Purchase Commitment Amount Due Within One Year + References No definition available. + Details
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- Definition Long Term Purchase Commitment Amount Due Within Three Years + References No definition available. + Details
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- Definition Long Term Purchase Commitment Amount Due Within Two Years + 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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Balance Type: | na
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- Definition Outstanding liability related to leasehold improvements current and non current. + References No definition available. + Details
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Balance Type: | credit
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- Definition Proceeds from landlord for financing leasehold improvement. + References No definition available. + Details
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- Definition Purchase Commitment Payments + References No definition available. + Details
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- Definition This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7661868&loc=d3e34039-112682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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