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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2018
Allowance for doubtful accounts receivable |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Period | $ 33,181 | $ 33,133 | $ 35,087 |
Charged to Expenses | 11,914 | 8,022 | 9,192 |
Deductions | (8,690) | (8,751) | (9,907) |
Translation Adjustments | 772 | 777 | (1,239) |
Balance at End of Period | 27,678 | 33,181 | 33,133 |
Liability recognized in accordance with ASC 606 | (33,181) | (33,133) | (35,087) | $ (23,682)
Allowance for doubtful accounts receivable | Accounting Standards Update 2014-09 |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Liability recognized in accordance with ASC 606 |  |  |  | $ 9,500
Deferred tax valuation allowance |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Period | 20,178 | 18,907 | 26,329 |
Charged to Expenses | 5,683 | 1,411 | 2,160 |
Deductions | (2,599) | (1,275) | (9,517) |
Translation Adjustments | (190) | 1,135 | (65) |
Balance at End of Period | 23,072 | 20,178 | 18,907 |
Liability recognized in accordance with ASC 606 | $ (20,178) | $ (18,907) | $ (26,329) |

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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