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Equity Method Investment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Equity Method Investments and Joint Ventures [Abstract]
Percentage of owned joint venture Investment in nonconsolidated affiliate	50.00%		50.00%
Investment in unconsolidated affiliate	$ 519		$ 519		$ 420
Equity in net income (loss) of unconsolidated affiliate	$ 63	$ (95)	$ (152)	$ (127)

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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