Investments in Unconsolidated Joint Ventures - Financial Position (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Other assets	$ 21,152	$ 17,283
Total assets	2,100,859	2,011,280
LIABILITIES AND EQUITY
Accounts payable	84,116	74,282
Accrued expenses	93,140	92,919
Total liabilities and equity	2,100,859	2,011,280
Joint Ventures
ASSETS
Cash	12,051	10,208
Loans held for sale	26,929	18,791
Accounts receivable	585	764
Other assets	156	56
Total assets	39,721	29,819
LIABILITIES AND EQUITY
Accounts payable	362	694
Accrued expenses	1,314	1,026
Credit lines payable	25,706	17,748
Other liabilities	24	17
Members equity	12,315	10,334
Total liabilities and equity	$ 39,721	$ 29,819