Leases - Schedule of Lease Expense, Cash Flow, Operating and Finance Lease Assets and Liabilities, Average Lease Term and Average Discount Rate (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Finance lease expense:
Amortization of right-of-use assets	$ 1,691
Interest on lease liabilities	83
Operating lease expense	3,509
Total lease expense	5,283
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from finance leases	83
Operating cash outflows from operating leases	3,463
Financing cash outflows from finance leases	1,230
Right-of-use assets obtained in exchange for new finance lease liabilities, net of terminations and disposals	2,573
Right-of-use assets obtained in exchange for operating lease liabilities (including adoption impact of $18.2 million) net of terminations and disposals	18,961
Operating leases:
Other non-current assets	15,201
Accrued liabilities	(2,949)
Other non-current liabilities	(13,282)
Total operating lease liabilities	(16,231)
Property and equipment gross	4,821
Accumulated depreciation	(2,118)
Property and equipment, net	2,703
Current portion of long-term debt	(1,023)
Long-term debt	(2,045)
Total finance lease liabilities	$ (3,068)
Weighted-average remaining lease term - finance leases (years)	4 years 1 month 6 days
Weighted-average remaining lease term - operating leases (years)	6 years 4 months 24 days
Weighted-average discount rate - finance leases	2.90%
Weighted-average discount rate - operating leases	3.90%