Commitments and Contingencies - Schedule of Consolidated Balance Sheets of Operating Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Assets
Right-of-use operating asset	$ 33,771	$ 5,300
Liabilities
Current operating lease liabilities	10,244
Long-term operating lease liabilities	26,848
Total operating lease liabilities	$ 37,092