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Equity Method Investment (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
Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]          
Percentage of owned joint venture Investment in nonconsolidated affiliate 50.00%   50.00%    
Investment in unconsolidated affiliate $ 428   $ 428   $ 487
Equity in net income (loss) of unconsolidated affiliate $ (56) $ 22 $ (59) $ (215)