Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
U.S.
Income Tax Disclosure [Line Items]
Net deferred tax asset	$ 6,841	$ 18,412
Non-U.S.
Income Tax Disclosure [Line Items]
Net deferred tax asset	8,084	10,827
Deferred tax assets: \| U.S.
Income Tax Disclosure [Line Items]
Accounts receivable, net	428	672
Inventories	1,450	762
Incentive compensation	4,580	4,490
Property, plant, equipment and intangibles, net	0	0
Pension, post retirement benefits - non-current	12,912	12,498
Tax loss carryforwards	217	517
Tax credit carryforwards	4,643	9,236
Derivatives	468	3,283
Reserves	991	2,704
Deferred revenue	239	1,471
Other	0	0
Deferred tax assets before valuation allowance	25,928	35,633
Less: valuation allowance	(9)	(9)
Total deferred tax assets	25,919	35,624
Deferred tax assets: \| Non-U.S.
Income Tax Disclosure [Line Items]
Accounts receivable, net	1,378	1,453
Inventories	1,752	1,995
Incentive compensation	1,084	1,064
Property, plant, equipment and intangibles, net	4,339	2,382
Pension, post retirement benefits - non-current	0	82
Tax loss carryforwards	19,821	24,509
Tax credit carryforwards	0	954
Derivatives	0	0
Reserves	0	0
Deferred revenue	0	0
Other	1,791	638
Deferred tax assets before valuation allowance	30,165	33,077
Less: valuation allowance	(10,650)	(10,261)
Total deferred tax assets	19,515	22,816
Deferred tax liabilities: \| U.S.
Income Tax Disclosure [Line Items]
Unrepatriated foreign earnings	6,308	3,779
Property, plant, equipment and intangibles, net	5,356	3,122
Basis difference in partner capital	2,466	2,911
Basis difference in investment	3,985	6,881
Deferred revenue	0	0
Other	963	519
Total deferred tax liabilities	19,078	17,212
Deferred tax liabilities: \| Non-U.S.
Income Tax Disclosure [Line Items]
Unrepatriated foreign earnings	0	0
Property, plant, equipment and intangibles, net	0	0
Basis difference in partner capital	0	0
Basis difference in investment	0	0
Deferred revenue	10,829	11,989
Other	602	0
Total deferred tax liabilities	$ 11,431	$ 11,989

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