Income Taxes Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 780	$ 550
Deferred Tax Assets, Inventory	6,410	5,680
Deferred Tax Assets, Goodwill and Intangible Assets	3,120	0
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	26,110	27,550
Deferred Tax Assets, Operating Loss and Credit Carryforwards	6,680	4,660
Deferred Tax Assets, Gross	43,100	38,440
Deferred Tax Assets, Valuation Allowance	(5,670)	(3,060)
Deferred Tax Assets, Net of Valuation Allowance	37,430	35,380
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(14,580)	(16,340)
Deferred Tax Liabilities, Goodwill and Intangible Assets	0	(26,600)
Deferred Tax Liabilities, Investment in Foreign Affiliates, Including Withholding Tax	(1,140)	(870)
Deferred Tax Liabilities, Other	(1,330)	(2,580)
Deferred Tax Liabilities, Gross	(17,050)	(46,390)
Deferred Tax Liabilities, Net		$ (11,010)
Deferred Tax Assets, Net	$ 20,380