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Joint Ventures (Summarized Information for Joint Ventures) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Equity Method Investments and Joint Ventures [Abstract] | ||
| Net sales | $ 10,978 | $ 11,332 |
| Gross profit | 3,445 | 3,652 |
| Net income | $ 1,839 | $ 1,955 |