Debt and Lease Obligations - Schedule of Supplemental Balance Sheet Information Related to Leases of Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finance leases:
Property and equipment, at cost	$ 1,535	$ 1,535
Accumulated amortization, net	(422)	(347)
Property and equipment, net	1,113	$ 1,188
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		Property and equipment, net
Current obligations of finance leases	410	$ 445
Long-term portion of finance leases	474	537
Total finance lease obligations	$ 884	$ 982
Weighted average remaining lease term (in years):
Operating leases	3 years 11 months 15 days	4 years 2 months 23 days
Finance leases	3 years 21 days	3 years 4 months 24 days
Weighted average discount rate:
Operating leases	12.80%	12.80%
Finance leases	10.80%	10.40%