GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Depreciation and amortization	Jun. 30, 2013 Depreciation and amortization
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying amount of goodwill	$ 0	$ 0
Goodwill impairment loss	0
Contractual service agreements
Contractual service agreements, gross carrying amount	15,600,000
Contractual service agreements, accumulated amortization	600,000
Contractual service agreements, net carrying amount	15,000,000
Amortization period	7 years
Amortization expense			600,000	600,000
Amortization expense for the next five fiscal years
Amortization expense, 2013			1,800,000	1,800,000
Amortization expense, 2014			2,400,000	2,400,000
Amortization expense, 2015			2,400,000	2,400,000
Amortization expense, 2016			2,400,000	2,400,000
Amortization expense, 2017			$ 2,400,000	$ 2,400,000