Restructuring Expenses - Activity in Restructuring Liability Accounts (Detail) - 2013 Restructuring [Member] $ in Thousands	3 Months Ended
Mar. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 2,209
Provision-net	0
Usage	(83)
Ending Balance	2,126
Lease/rental terminations [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2,123
Provision-net	0
Usage	(83)
Ending Balance	2,040
Relocation, move, transition travel, other [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	86
Provision-net	0
Ending Balance	$ 86

The aggregate total amount charged against earnings for expenses incurred and estimated for restructuring pursuant to a duly authorized plan, net of any offsets or reductions in prior period estimates.

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- 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=56944662&loc=d3e3602-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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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