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VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for Doubtful Accounts [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | $ 7,919 | $ 6,952 | $ 8,530
Charge to expense |  | 579 | 1,388 | 23
Other | [1] | (1,161) | (421) | (1,601)
Balance at end of the period |  | 7,337 | 7,919 | 6,952
Allowance for Sales Returns [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | 11,370 | 13,714 | 14,024
Charge to expense |  | 8,372 | 8,909 | 10,851
Other | [1] | (8,399) | (11,253) | (11,161)
Balance at end of the period |  | 11,343 | 11,370 | 13,714
Valuation Allowance Deferred Tax Assets [Member] |  |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at beginning of period |  | 16,057 | 22,821 | 24,439
Charge to expense |  | (4,882) | (3,552) | (88)
Other | [1] | (2,786) | (3,212) | (1,530)
Balance at end of the period |  | $ 8,389 | $ 16,057 | $ 22,821
[1] | Amounts sold, written off, or recovered, and the effect of changes in currency translation rates, are included in Column D.

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: 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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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: 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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