Leases - Schedule of Lease Liability Payments (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Leases [Abstract]
2019 (excluding the three months ended March 31, 2019)	$ 7,870
2020	9,192
2021	6,427
2022	5,317
2023	4,145
Subsequent to 2023	17,231
Total Undiscounted Cash Flows	50,182
Less: Imputed interest	(9,846)
Present value	40,336
Current operating lease liabilities	8,975	[1]
Non-current operating lease liabilities	31,361
Total lease liabilities	$ 40,336

[1] This item is included in Accrued liabilities line on the Company’s Condensed Consolidated Balance Sheet