Leases -The Company's operating and finance leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Finance lease costs:
Amortization - ROU assets	$ 5	$ 5	$ 10	$ 9
Interest expense				1
Operating lease costs	282	391	656	845
Short-term lease costs	91	113	201	150
Total lease costs	$ 378	$ 509	867	1,005
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows – finance leases				1
Operating cash flows – operating leases			648	848
Financing cash flows – finance leases			$ 10	$ 9
Weighted-average remaining lease term:
Finance leases (in years)	1 year 6 months		1 year 6 months
Operating leases (in years)	4 years 2 months 12 days		4 years 2 months 12 days
Weighted-average discount rate:
Finance leases	3.40%		3.40%
Operating leases	3.90%		3.90%