Income Taxes - Significant Components Of Deferred Tax Liabilities And Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Goodwill and other intangibles	$ 7,857	$ 8,782
Accrued settlement	8,112	10,196
Deferred compensation	2,351	3,620
Contingent liabilities	649	786
Net operating loss / tax credit carryforwards	25,123	1,118
Pension and post-retirement liability	1,696	1,414
Inventories	1,529	1,118
Warranty reserve	297	294
Accounts receivable	214	254
Other	709	585
Total deferred tax assets	48,537	28,167
Less: valuation allowance	(1,483)	(752)
Net deferred tax assets	47,054	27,415
Deferred tax liabilities:
Goodwill and other intangibles	(4,116)	(4,454)
Depreciation	(7,140)	(5,638)
Inventory § 481(a) adjustment	(1,027)	(2,065)
Unremitted earnings of foreign subsidiaries	(200)	(390)
Other	(175)	(97)
Total deferred tax liabilities	(12,658)	(12,644)
Net deferred tax assets	$ 34,396	$ 14,771