Leases, Commitments and Contingencies - Schedule of Condensed Consolidated Balance Sheets of Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Assets
Right of use operating asset	$ 38,124	$ 41,100
Liabilities
Current operating lease liabilities	7,149
Long-term operating lease liabilities	34,528
Total operating lease liabilities	$ 41,677	$ 44,200