CONSOLIDATED FUNDS AND VENTURES (Details 6) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Debt, Carrying Amount	$ 1,018,707	$ 1,042,959
Consolidated Funds and Ventures [Member]
Debt, Carrying Amount	49,903	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] | Other Entity [Member]
Debt, Carrying Amount	282	6,081
Face Amount	$ 1,706	$ 7,289
Weighted-average Effective Interest Rates	19.00%	10.40%
Maturity Date, Description	Various dates through April 2025	Various dates through October 2021