Leases -The Company's operating and finance leases (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Finance lease costs:
Amortization – ROU assets	[1]	$ 5	$ 3	$ 9	$ 6
Interest expense		1		1	1
Operating lease costs	[1]	78	73	156	154
Short-term lease costs	[1]	42	59	91	104
Total lease costs		$ 126	$ 135	257	265
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows – finance leases				1	1
Operating cash flows – operating leases				159	159
Financing cash flows – finance leases				$ 8	$ 5
Weighted-average remaining lease term:
Finance leases (in years)		3 years		3 years
Operating leases (in years)		1 year 4 months 24 days		1 year 4 months 24 days
Weighted-average discount rate:
Finance leases		3.70%		3.70%
Operating leases		4.00%		4.00%

[1] Included in other operating expenses of the consolidated statement of income.