LEASES - Schedule of Components of Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Operating	$ 4,464	$ 5,171
Finance	3,796	4,296
Total ROU assets	8,260	9,467
Current Liabilities:
Operating	$ 1,021	$ 1,182
Operating Lease Liability Current Statement Of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Finance	$ 1,353	$ 1,416
Long-term
Operating	$ 2,897	$ 3,441
Operating Lease Liability Noncurrent Statement Of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Finance	$ 2,194	$ 2,592
Total lease liabilities	$ 7,465	$ 8,631