Leases - Schedule of Maturity Analysis of Minimum Lease Payment Obligation Under Non-cancellable Operating Leases (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee Lease Description [Line Items]
2020	$ 2,291
2021	2,167
2022	199
2023 and thereafter	0
Total lease payments	4,657
Less: interest	225
Present value of lease liabilities	4,432
Office Leases [Member]
Lessee Lease Description [Line Items]
2020	1,603
2021	1,631
2022	140
2023 and thereafter	0
Total lease payments	3,374
Less: interest	177
Present value of lease liabilities	3,197
Leased Vehicles and Office Equipment [Member]
Lessee Lease Description [Line Items]
2020	688
2021	536
2022	59
2023 and thereafter	0
Total lease payments	1,283
Less: interest	48
Present value of lease liabilities	$ 1,235