Supplemental Disclosure of Statement of Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Significant Noncash Transactions [Line Items]
Interest paid	$ 88,725	$ 100,080	$ 92,788
Income taxes paid	741	859	4,666
Interests Sold [Member]
Other Significant Noncash Transactions [Line Items]
Real estate non-recourse mortgage debt assumed	55,000	30,140	40,356
Conveyed Interest [Member]
Other Significant Noncash Transactions [Line Items]
Mortgage loans on real estate, foreclosures	$ 47,528	$ 9,900	$ 49,510