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Restructuring Expenses - Activity in Restructuring Liability Accounts (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Jun. 30, 2014 | Sep. 30, 2014 2012 Restructuring [Member] | Sep. 30, 2014 2012 Restructuring [Member] One-time employee termination benefits [Member] | Sep. 30, 2014 2014 Restructuring [Member] | Sep. 30, 2014 2014 Restructuring [Member] One-time employee termination benefits [Member] | Sep. 30, 2014 2014 Restructuring [Member] Fixed asset write-offs, transition travel, other [Member] | Sep. 30, 2014 2013 Restructuring [Member] | Sep. 30, 2014 2013 Restructuring [Member] One-time employee termination benefits [Member] | Sep. 30, 2014 2013 Restructuring [Member] Fixed asset write-offs, transition travel, other [Member] | Sep. 30, 2014 2013 Restructuring [Member] Lease/rental terminations [Member]
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |
Beginning Balance |  | $ 4 | $ 4 |  |  |  | $ 3,368 | $ 215 | $ 38 | $ 3,115
Provision-net |  | (4) | (4) | 1,801 | 1,697 | 104 | 639 | (194) | 15 | 818
Usage | (400) |  |  | (1,711) | (1,696) | (15) | (1,006) | (21) | (53) | (932)
Ending Balance |  |  |  | $ 90 | $ 1 | $ 89 | $ 3,001 |  |  | $ 3,001

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- Definition 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. + References No definition available. + Details
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- 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 + Details
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- Details
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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 + Details
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