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Income Taxes Components of Deferred Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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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)

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