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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
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance | $ (7,900) |  |
Change in Estimate of Interest Deductions |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance |  | $ (5,400) |
Allowance for Doubtful Accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 4,586 | 4,470 | $ 11,558
Charged to Cost and Expenses | 7,507 | 380 | 5,211
Due to Currency Translation Adjustments | 370 | (149) | 524
Other | 1,049 | (115) | (12,823)
Balance at End of Period | 13,512 | 4,586 | 4,470
Deferred Tax Assets - Valuation Allowance |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 137,450 | 172,846 | 145,216
Charged to Cost and Expenses | (7,395) | (20,104) | 32,785
Due to Currency Translation Adjustments | 448 | (8,612) | 9,853
Other | (3,429) | (6,680) | (15,008)
Balance at End of Period | 127,074 | 137,450 | 172,846
Valuation Allowance, Deferred Tax Asset, liquidation and Merger of Entities [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance | (5,600) |  |
Capital Loss Carryforward |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance |  | $ (1,100) |
Pension Adjustments |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance | (900) |  | (11,600)
Valuation Allowance, Deferred Tax Asset, Tax Credit [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance | $ (800) |  |
US tax rate change |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Decrease in valuation allowance |  |  | $ (4,600)

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