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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Allowance for doubtful accounts receivable |  |
Movement in valuation and qualifying accounts |  |
Balance at Beginning of Year | $ 454 | $ 407
Provisions | 4 | 77
Amounts Written Off | (264) | (30)
Amounts Recovered | (51) | 0
Effect of Currency Translation | 0 | 0
Balance at End of Year | 143 | 454
Allowance for sales returns |  |
Movement in valuation and qualifying accounts |  |
Balance at Beginning of Year | 351 | 298
Provisions | 1,099 | 2,029
Amounts Written Off | (1,139) | (1,989)
Amounts Recovered | 0 | 0
Effect of Currency Translation | 69 | 13
Balance at End of Year | 380 | 351
Tax valuation allowance |  |
Movement in valuation and qualifying accounts |  |
Balance at Beginning of Year | 15,262 | 21,388
Provisions | (6,510) | (6,120)
Amounts Written Off | 0 | 0
Amounts Recovered | 0 | 0
Effect of Currency Translation | (102) | (6)
Balance at End of Year | $ 8,650 | $ 15,262

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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=120395691&loc=d3e24092-122690 + Details
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