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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 II - Valuation and Qualifying Accounts |
| 2018 |  | 2017 |  | 2016
| (In thousands)
Allowance for doubtful accounts: |
Balance at beginning of year | $ | 5,540 |  |  | $ | 5,610 |  |  | $ | 8,189 |
Additions— |  |  |  |  |
Charged to costs and expenses (2) | 375 |  |  | 1,649 |  |  | 1,471 |
Deductions— |  |  |  |  |
Deductions from reserves, net (1)(2) | 546 |  |  | 1,719 |  |  | 4,050 |
Balance at end of year | 5,369 |  |  | 5,540 |  |  | 5,610 |
Income tax valuation allowance: |  |  |  |  |
Balance at beginning of year | $ | 4,559 |  |  | $ | 5,303 |  |  | $ | 5,153 |
Additions— |  |  |  |  |
Charged to costs and expenses (3) | 859 |  |  | 906 |  |  | 3,095 |
Deductions— |  |  |  |  |
Deductions from reserves (3) | 379 |  |  | 1,650 |  |  | 2,945 |
Balance at end of year | $ | 5,039 |  |  | $ | 4,559 |  |  | $ | 5,303 |
(1) | Bad debts written off, net of recoveries.
(2) | Activity for 2018, 2017 and 2016 includes currency translation (losses) gains of $(291), $285 and $(203), respectively.
(3) | Activity for 2018, 2017 and 2016 includes currency translation (losses) gains of $(367), $248 and $113, respectively.

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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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