Income Taxes - Schedule of Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Gross deferred tax assets:
Accrued expenses	$ 731	$ 1,167
Reserves on assets	1,777	1,566
Share-based compensation awards	334	410
Minimum pension	2,188	1,946
Net operating loss carry-forwards	3,531	3,141
Tax credit carry-forwards	2,518	2,940
Investment in joint venture	1,505
Other	645	371
Depreciation		140
Leases	2,556	2,999
Valuation allowances	(5,965)	(5,810)
Total Deferred Tax Assets	9,820	8,870
Gross deferred tax liabilities:
Depreciation	(1,159)
Goodwill and intangibles	(11,565)	(9,855)
Prepaid expenses and inventory	(438)	(554)
Withholding tax on unremitted foreign earnings	(871)	(646)
Leases	(2,602)	(3,010)
Revenue recognition	(155)	(748)
Total Deferred Tax Liabilities	(16,790)	(14,813)
Net deferred tax liabilities	$ (6,970)	$ (5,943)