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Equity Method Investment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 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 $ 456   $ 456   $ 420
Equity in net income/(loss) of unconsolidated affiliate $ 22 $ (32) $ (215) $ (32)