Preferred Equity Investment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Current pay rate	6.00%
Current accrual rate	2.00%
Interest Income from preferred equity investment	$ 1,100
Proceeds from sale of preferred equity investment	$ 35,100	$ 0