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Joint Ventures (Summarized Information for Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Equity Method Investments and Joint Ventures [Abstract]
Net sales	$ 12,751	$ 12,623	$ 24,160	$ 23,288
Gross profit	3,921	2,952	7,214	5,200
Net income	$ 2,124	$ 1,524	$ 4,078	$ 2,582

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.