Income Taxes Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 260	$ 480
Deferred Tax Assets, Inventory	5,080	4,390
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	19,190	12,210
Deferred Tax Assets, Operating lease liability	8,950	6,790
Deferred Tax Assets, Operating Loss and Credit Carryforwards	20,760	9,200
Deferred Tax Assets, Other	340	340
Deferred Tax Assets, Gross	54,580	33,410
Deferred Tax Assets, Valuation Allowance	(10,180)	(8,310)
Deferred Tax Assets, Net of Valuation Allowance	44,400	25,100
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(24,140)	(20,650)
Deferred Tax Liabilities, Right of Use Asset	(8,930)	(6,700)
Deferred Tax Liabilities, Goodwill and Intangible Assets	(16,230)	(13,250)
Deferred Tax Liabilities, Investment in Foreign Affiliates, Including Withholding Tax	(370)	(830)
Deferred Tax Liabilities, Gross	(49,670)	(41,430)
Deferred Tax Liabilities, Net	$ (5,270)	$ (16,330)