XML 99 R77.htm IDEA: XBRL DOCUMENT v3.6.0.2
Reconciliation of Beginning and Ending Liability Balances for Restructuring Charges (Detail) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]      
Accrual - Beginning balance   $ 3,028  
Costs incurred and charged to expense   2,035 $ 6,040
Costs paid or settled   (3,687) (3,012)
Accrual - Ending balance   1,376 3,028
Twenty Sixteen Restructuring Plan      
Restructuring Cost and Reserve [Line Items]      
Costs incurred and charged to expense $ 1,500 1,475  
Costs paid or settled   (1,266)  
Accrual - Ending balance   209  
Twenty Fifteen Restructuring Plan      
Restructuring Cost and Reserve [Line Items]      
Accrual - Beginning balance   3,028  
Costs incurred and charged to expense   560 6,040
Costs paid or settled   (2,421) (3,012)
Accrual - Ending balance   $ 1,167 $ 3,028