PROPERTY, EQUIPMENT AND FACILITIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Property, equipment and facilities net [Abstract]
Property, equipment and facilities, Gross	$ 291,930,000	$ 302,288,000
Less accumulated depreciation and amortization	(137,834,000)	(122,274,000)
Property, equipment and facilities, Net	154,096,000	180,014,000
Depreciation and amortization expense	26,400,000	26,300,000
Land [Member]
Property, equipment and facilities net [Abstract]
Property, equipment and facilities, Gross	18,363,000	18,363,000
Buildings and Improvements [Member]
Property, equipment and facilities net [Abstract]
Property, equipment and facilities, Gross	192,990,000	206,499,000
Capital leased assets, gross	26,800,000	26,800,000
Capital leased assets, accumulated depreciation	7,000,000	5,200,000
Capitalized interest cost	600,000	600,000
Accumulated depreciation on capitalized interest cost	400,000	300,000
Buildings and Improvements [Member] | Minimum [Member]
Property, equipment and facilities net [Abstract]
Useful life (years)	1 year
Buildings and Improvements [Member] | Maximum [Member]
Property, equipment and facilities net [Abstract]
Useful life (years)	25 years
Equipment, Furniture and Fixtures [Member]
Property, equipment and facilities net [Abstract]
Property, equipment and facilities, Gross	79,172,000	75,112,000
Capital leased assets, gross	600,000	700,000
Capital leased assets, accumulated depreciation	600,000	600,000
Equipment, Furniture and Fixtures [Member] | Minimum [Member]
Property, equipment and facilities net [Abstract]
Useful life (years)	1 year
Equipment, Furniture and Fixtures [Member] | Maximum [Member]
Property, equipment and facilities net [Abstract]
Useful life (years)	12 years
Vehicles [Member]
Property, equipment and facilities net [Abstract]
Useful life (years)	3 years
Property, equipment and facilities, Gross	1,231,000	1,155,000
Construction in Progress [Member]
Property, equipment and facilities net [Abstract]
Property, equipment and facilities, Gross	$ 174,000	$ 1,159,000