|
Valuation and Qualifying accounts (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Allowance for Doubtful Accounts [Member]
|
|||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Valuation Allowances and Reserves, Opening Balance | $ 430 | $ 390 | $ 361 |
| Valuation Allowances and Reserves, Charged to Cost and Expense | 55 | 48 | 30 |
| Valuation Allowances and Reserves, Adjustments | 132 | 8 | 1 |
| Valuation Allowances and Reserves, Closing Balance | 353 | 430 | 390 |
|
Allowance for Sales Returns [Member]
|
|||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Valuation Allowances and Reserves, Opening Balance | 429 | 1,411 | 584 |
| Valuation Allowances and Reserves, Charged to Cost and Expense | 5,375 | 4,265 | 6,750 |
| Valuation Allowances and Reserves, Adjustments | 5,274 | 5,247 | 5,923 |
| Valuation Allowances and Reserves, Closing Balance | $ 530 | $ 429 | $ 1,411 |