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Reorganization - Schedule of Rolls Forward of Activity in Reorganization Accrual (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2015
USD ($)
Restructuring Cost and Reserve [Line Items]  
Accrual Beginning Balance $ 118
Additions 4,433
Cash payments (3,134)
Non-cash charge (475)
Accrual Ending Balance 942
Workforce Reduction [Member]  
Restructuring Cost and Reserve [Line Items]  
Accrual Beginning Balance 118
Additions 3,173
Cash payments (3,134)
Accrual Ending Balance 157
Subsidiary Liquidation [Member]  
Restructuring Cost and Reserve [Line Items]  
Additions 334
Non-cash charge (318)
Accrual Ending Balance 16
Products Group Reorganization [Member]  
Restructuring Cost and Reserve [Line Items]  
Additions 926
Non-cash charge (157)
Accrual Ending Balance $ 769