Annual report pursuant to Section 13 and 15(d)

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details)

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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts receivable      
Movement in valuation and qualifying accounts      
Balance at Beginning of Year $ 190 $ 849 $ 1,087
Provisions 305 83 (121)
Amounts Written Off (290) (714) (75)
Amounts Recovered 0 0 4
Effect of Currency Translation 0 (28) (46)
Balance at End of Year 205 190 849
Allowance for sales returns      
Movement in valuation and qualifying accounts      
Balance at Beginning of Year 94 129 135
Provisions 1,435 1,126 1,527
Amounts Written Off (1,368) (1,155) (1,525)
Amounts Recovered 0 0 0
Effect of Currency Translation (5) (6) (8)
Balance at End of Year 156 94 129
Tax valuation allowance      
Movement in valuation and qualifying accounts      
Balance at Beginning of Year 6,565 13,169 11,340
Provisions 5,638 (6,088) 1,829
Amounts Written Off (493) 0 0
Amounts Recovered 0 0 0
Effect of Currency Translation (460) (516) 0
Balance at End of Year $ 11,250 $ 6,565 $ 13,169