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Equity Based Compensation (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Equity Based Compensation [Abstract]      
Unit-based compensation expense $ 112,000 $ 100,000 $ 100,000
Total unrecognized compensation costs   $ 1,000,000  
Weighted average period of recognition (years)   3 years 4 months 10 days