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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

The amount of gross profit (loss) reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.