Commitments and Contingencies - Estimated Fair Value Liability Established for Costs (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Accruals at January 1, 2012	$ 420	$ 1,175
Additional abandoned leases	99
Extinguishments		(301)
Accretion and adjustments	197	268
Payments	(505)	(722)
Accruals at December 31, 2012	$ 211	$ 420

Loss contingency accrual at carrying value additional leases abandoned.

No definition available.

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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- Definition

Amount of payments made reducing loss contingency liability.

+ References

+ Details

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- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

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