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Income Taxes Other information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |  |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities | $ 590 | $ 1,036 |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 13,100 |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 16,800 |  |
Undistributed Earnings of Foreign Subsidiaries |  | 3,900 | $ (8,400)
Goodwill | 20,923 | 20,079 | $ 19,614
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | (475) | 0 |
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at beginning of year | 3,612 | 4,255 |
Additions for tax positions of current year | 13 | 43 |
Additions for tax positions of prior years | 121 | 85 |
Reductions for tax positions of prior years | (29) | (771) |
Balance at end of year | $ 3,242 | $ 3,612 |

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