Income Taxes - Significant Components Of Deferred Tax Liabilities And Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Goodwill and other intangibles	$ 7,047	$ 7,857
Accrued settlement	6,000	8,112
Deferred compensation	2,165	2,351
Contingent liabilities	644	649
Net operating loss / tax credit carryforwards	28,932	25,123
Pension and post-retirement liability	1,218	1,696
Inventories	500	1,529
Warranty reserve	248	297
Accounts receivable	129	214
Interest deduction carryforward	161	0
Other	767	709
Total deferred tax assets	47,811	48,537
Less: valuation allowance	(3,290)	(1,483)
Net deferred tax assets	44,521	47,054
Deferred tax liabilities:
Goodwill and other intangibles	(3,814)	(4,116)
Depreciation	(6,919)	(7,140)
Inventory § 481(a) adjustment	0	(1,027)
Unremitted earnings of foreign subsidiaries	(220)	(200)
Other	(79)	(175)
Total deferred tax liabilities	(11,032)	(12,658)
Net deferred tax assets	$ 33,489	$ 34,396