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Restructuring - Summary of Restructuring Liability (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2013		$ 881
Accruals		6,416
Payments		(1,662)
Stock-based compensation	(1,298)	(1,298)
Balance at June 30, 2014	4,337	4,337
Employee Severance Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2013		0
Accruals		1,714
Payments		(1,146)
Stock-based compensation		0
Balance at June 30, 2014	568	568
Facility Exit Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2013		881
Accruals		1,004
Payments		(494)
Stock-based compensation		0
Balance at June 30, 2014	1,391	1,391
CEO Termination Employment Contract Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2013		0
Accruals		2,400
Payments		(22)
Stock-based compensation		0
Balance at June 30, 2014	2,378	2,378
CEO Termination Share-based Compensation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at December 31, 2013		0
Accruals		1,298
Payments		0
Stock-based compensation		(1,298)
Balance at June 30, 2014	$ 0	$ 0

X

- Definition

Additions during the period to the restructuring reserve.

+ References

No definition available.

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- Definition

Restructuring Charges For Shared Based Compensation Acceleration For Termination Of Chief Executive Officer

+ References

No definition available.

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X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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