Income Taxes - Components of Deferred Tax Asset and Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Accounts receivable	$ 377	$ 172
Financial Hedging Instruments	1,491	585
Interest Expense Carryovers	2,371	463
Inventories	1,845	520
Net operating loss carryforwards	8,478	6,095
Operating lease	6,001	0
Other accrued liabilities	5,905	2,378
Pension	4,274	5,181
Tax Credits	2,015	1,846
Total deferred tax assets	32,757	17,240
Deferred tax liabilities:
Intangible assets	21,990	25,133
Right of use assets	6,001	0
Property, plant and equipment	28,177	23,353
Total deferred tax liabilities	56,168	48,486
Valuation allowance	9,217	5,964
Net deferred tax liabilities	$ (32,628)	$ (37,210)