PROPERTY AND EQUIPMENT (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment	$ 169,565,000	$ 183,159,000
Less: accumulated depreciation and amortization	(150,894,000)	(154,496,000)
Net property and equipment	18,671,000	28,663,000
Depreciation expense	13,800,000	15,800,000	19,000,000
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,214,000	1,790,000
Equipment and furniture [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	119,848,000	126,790,000
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 48,503,000	$ 54,579,000