CONSOLIDATED FUNDS AND VENTURES (Details 7) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Debt, Carrying Amount	$ 461,126	$ 1,042,959
Maturity Date, Description	bonds that are 30 days or greater past due in either principal or interest
Consolidated Funds and Ventures [Member]
Debt, Carrying Amount	96,142	55,433
Consolidated Funds and Ventures [Member] | SA Fund [Member]
Debt, Carrying Amount	49,621	49,352
Face Amount	49,621	49,352
Weighted-average Effective Interest Rates	2.60%	2.60%
Maturity Date, Description	April 2018	April 2018
Consolidated Funds and Ventures [Member] | Lower Tier Property Partnerships [Member]
Debt, Carrying Amount	46,521	6,081
Face Amount	$ 46,648	$ 7,289
Weighted-average Effective Interest Rates	6.40%	10.40%
Maturity Date, Description	Various dates through March 2049	Various dates through October 2021