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Schedule II - Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowances for doubtful accounts |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of Year |  | $ 1,288 | $ 2,023 | $ 1,342
Additions Charged to Expense |  | 1,050 | 414 | 2,470
Additions Charged to Other Accounts |  | 45 | 39 | 49
Write Offs |  | (1,182) | (1,170) | (1,529)
Other | [1] | (1) | (18) | (309)
Balance at end of Year |  | 1,200 | 1,288 | 2,023
Deferred tax valuation allowance |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of Year |  | 3,356 | 4,010 | 3,998
Additions Charged to Expense |  | 884 | 1,230 | 1,385
Write Offs |  |  | (1,851) | (1,595)
Other | [1] | 36 | (33) | 222
Balance at end of Year |  | $ 4,276 | $ 3,356 | $ 4,010
[1] |
(1) | “Other” primarily includes foreign exchange translation adjustments.

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