VARIABLE INTEREST ENTITIES INCOME TAXES (Components of Income Taxes) (Details) RSO (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Mar. 31, 2011	Jun. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]
Current:
Federal								$ 11,497	$ 7,839
State								776	4,596
Total current tax provision								12,273	12,435
Deferred:
Federal								1,769	(305)
State								560	(94)
Total deferred tax provision (benefit)								2,329	(399)
Income tax provision (benefit)	$ 1,440	$ (119)	$ 1,167	$ 1,048	$ 2,488	$ 28,114	$ 7,429	$ 14,602	$ 12,036