Income Taxes Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 480	$ 590
Deferred Tax Assets, Inventory	4,390	3,040
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	12,210	14,470
Deferred Tax Assets, Operating lease liability	6,790	0
Deferred Tax Assets, Operating Loss and Credit Carryforwards	9,200	5,740
Deferred Tax Assets, Other	340	330
Deferred Tax Assets, Gross	33,410	24,170
Deferred Tax Assets, Valuation Allowance	(8,310)	(4,330)
Deferred Tax Assets, Net of Valuation Allowance	25,100	19,840
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(20,650)	(14,620)
Deferred Tax Liabilities, Right of Use Asset	(6,700)	0
Deferred Tax Liabilities, Goodwill and Intangible Assets	(13,250)	(6,420)
Deferred Tax Liabilities, Investment in Foreign Affiliates, Including Withholding Tax	(830)	(1,050)
Deferred Tax Liabilities, Gross	(41,430)	(22,090)
Deferred Tax Liabilities, Net	$ (16,330)	$ (2,250)