Related Party Transactions and Investments in Non-Consolidated Entities (Details 3) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Related Party Transactions and Investments in Non-Consolidated Entities
Asset management fees, low end of range (as a percent)	1.00%
Asset management fees, high end of range (as a percent)	5.00%
Notice period for cancellation of applicable contracts	30 days
Asset management fee income from non-consolidated entities	$ 346,000	$ 497,000