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Schedule II Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts Disclosure | Schedule II — Valuation and Qualifying Accounts (in thousands)
Column A |  | Column B |  | Column C |  | Column D |  | Column E
|  |  |  | Additions |  |  |  |
|  |  |  | (1) |  | (2) |  |  |  |
|  | Balance at the Beginning of Period |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  |  |  | Balance at End of Period
Description |  |  |  |  | -Deductions- |
|  |  |  |  |  | Note (A) |  | Note (B) |  |
Accounts receivable — allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended December 31, 2018 |  | $ | 15,549 |  |  | $ | 1,167 |  |  | $ | (678 | ) |  | $ | 569 |  |  | $ | 15,469 |
Year ended December 31, 2017 |  | $ | 14,234 |  |  | $ | 1,403 |  |  | $ | 1,005 |  |  | $ | 1,093 |  |  | $ | 15,549 |
Year ended December 31, 2016 |  | $ | 14,435 |  |  | $ | 1,087 |  |  | $ | (760 | ) |  | $ | 528 |  |  | $ | 14,234 |
Deferred tax valuation allowance: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended December 31, 2018 |  | $ | 12,857 |  |  | $ | — |  |  | $ | 3,023 |  |  | $ | 796 |  |  | $ | 15,084 |
Year ended December 31, 2017 |  | $ | 10,730 |  |  | $ | 9,513 |  |  | $ | 72,170 |  |  | $ | 79,556 |  |  | $ | 12,857 |
Year ended December 31, 2016 |  | $ | 25,435 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,705 |  |  | $ | 10,730 |
_______________________________________ Note (A) For accounts receivable, amounts comprise currency translation adjustments. For deferred tax valuation allowance in 2018, 2017, and 2016, amounts relate primarily to changes in foreign tax credit carryforwards and R&D credit carryforwards. Note (B) For accounts receivable, amounts represent excess of uncollectible balances written off over recoveries of accounts previously written off. For deferred tax valuation allowance, the decrease in 2017 and 2016 relates primarily to decreases in foreign tax credit and R&D credit carryforwards. Amounts in 2017 include certain excess tax benefits resulting from the adoption of ASU 2016-09, offset by the effects of the 2017 Tax Act.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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- References No definition available. + Details
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