NET INCOME PER COMMON UNIT (Net Income Per Common Unit) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net income from continuing operations	$ 45,934	$ (11,841)	$ 24,328	$ (13,436)	$ 655	$ 7,861	$ (1,930)	$ 45,851	$ 44,985		$ 52,437		$ 78,651
Decrease in deferred fee liability									0	[1]	0	[1]	(6,107)	[1]
Net income attributable to noncontrolling interests in consolidated entities - Continuing Operations									(26,245)		(17,575)		(44,641)
Net income from continuing operations									18,740		34,862		27,903
(Loss) Income from discontinued operations									(165)		11,328		2,626
Net loss (income) attributable to noncontrolling interests in consolidated entities - Discontinued Operations									885		(5,172)		(1,167)
Income from discontinued operations, net of tax, attributable to parent									720		6,156		1,459
Net income attributable to common unitholders									$ 19,460		$ 41,018		$ 29,362
Net income per common unit - basic
Net income from continuing operations	1.09	(0.54)	0.57	(0.49)	(0.13)	0.09	(0.25)	1.74	0.63		1.17		1.35
Net income from discontinued operations									0.02		0.21		0.06
Net income attributable to common unitholders	1.04	(0.52)	0.53	(0.40)	(0.03)	0.11	(0.24)	1.83	0.65		1.38		1.41
Net income per common unit - diluted
Net income from continuing operations	1.03	(0.54)	0.57	(0.49)	(0.13)	0.09	(0.25)	1.74	0.61		1.17		0.94
Net income from discontinued operations									0.02		0.21		0.05
Net income attributable to common unitholders	0.99	(0.52)	0.53	(0.40)	(0.03)	0.11	(0.24)	1.83	0.63		1.38		0.99
Weighted average common units outstanding - basic									29,912,993		29,748,746		25,232,985
Adjustment for deferred fee liabilities									0	[1]	0	[1]	4,021,933	[1]
Adjustment for distribution payable									0	[2]	0	[2]	414,110	[2]
Unvested restricted stock									58,134		25,781		554
Denominator for net income per common unit - diluted									30,798,113		29,774,527		29,669,582
Anti-dilutive shares excluded from diluted per unit calculation (in shares)									826,986		0		0

[1] Includes common units assuming a common unit settlement of the deferred fee liability as described in Note 13 - “Related Party Transactions.”

[2] Includes common units assuming a common unit settlement of the distribution payable. The Target Distribution liability is described in Note 16 - "Capital and Accumulated Other Comprehensive Income (Loss)" and was settled in April 2011.