Annual report pursuant to Section 13 and 15(d)

Receivables, net (Details)

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Receivables, net (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Accounts receivable, net    
Gross customer accounts receivable $ 104,604 $ 100,342
Allowance for doubtful accounts (6,618) (9,500)
Customer accounts receivable, net 97,986 90,842
Receivables from distributors 107,251 121,410
Other receivables 27,749 29,475
Total receivables, net $ 232,986 $ 241,727