PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property and equipment		$ 183,159	$ 212,228
Less: accumulated depreciation and amortization		(154,496)	(172,645)
Net property and equipment		28,663	39,583
Sales price of long-lived assets held for sale		5,752
Commissions and closing costs on sale of long-lived assets held for sale		247
Facility held for sale, Estimated fair value			9,000
Depreciation expense		15,786	19,031	22,156
Impairment of property and equipment, net-held for sale	4,000
Long Lived Assets Held-for-sale, Final Impairment Charges		3,491	1,710	0
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment		1,790	838
Equipment and furniture [Member]
Property, Plant and Equipment [Line Items]
Property and equipment		126,790	113,690
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment		54,579	96,390
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment		$ 0	$ 1,310