Accounts Receivable (Narrative) (Details) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Valuation and Qualifying Accounts Disclosure [Line Items] | ||
| Allowance for doubtful accounts | $ 3,380 | $ 3,484 |
| Reserves for sales discounts | ||
| Valuation and Qualifying Accounts Disclosure [Line Items] | ||
| Reserves for sales discounts on products shipped under promotional programs | $ 13,000 | $ 15,094 |