Leases, Commitments and Contingencies - Schedule of Condensed Consolidated Balance Sheets of Operating Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Assets
Right of use operating asset	$ 37,224	$ 41,100
Liabilities
Current operating lease liabilities	7,393
Long-term operating lease liabilities	33,309
Total operating lease liabilities	$ 40,702	$ 44,200