Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued bonuses	$ 11,995	$ 7,677
Accrued interest	433	3,558
Accrued payroll and severance	6,479	19,958
Accrued taxes	5,977	28,974
Accrued commissions/rebates	49,157	40,991
Other	76,636	77,217
Total	$ 150,677	$ 178,375