Leases Commitments - Schedule of Components of Lease Expense (Detail) - Accounting Standards Update 2016-02 [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost - Right of Use Asset	$ 217
Operating lease cost - Variable	57
Finance lease costs
Amortization of leased assets	0
Interest on lease liabilities Interest expense	0
Total	274
Cash paid from operating cash flows for operating leases	$ 118
Weighted-average remaining lease term of operating leases (in years)	1 year 11 months 15 days
Weighted-average discount rate for operating leases	5.50%