XML 45 R32.htm IDEA: XBRL DOCUMENT v3.7.0.1
Accounts Receivable (Narrative) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Valuation and Qualifying Accounts Disclosure [Line Items]    
Allowance for doubtful accounts $ 2,429 $ 2,501
Reserves for sales discounts    
Valuation and Qualifying Accounts Disclosure [Line Items]    
Reserves for sales discounts on products shipped under promotional programs $ 17,453 $ 13,488