INCOME TAXES (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Income Taxes [Line Items]
Unrecognized tax benefits		$ 1,126,000	$ 1,194,000	$ 1,276,000
Unrecognized tax benefits that would affect provision for income taxes		740,000	784,000
Interest on income taxes accrued		116,000	136,000
Interest on income tax expense		(20,000)	(44,000)	(1,000,000)
Possible decrease in unrecognized tax benefits		234,000
Estimated provision for income taxes before deferred tax asset valuation allowance resulting from lapse of applicable statute of limitations		153,000
Intraperiod tax allocation expense (benefit)			(10,500,000)
Accumulated other comprehensive (loss) regarding unrealized gain on certain interest reate swap agreements		(6,800,000)
Provision for income tax, expiration of unrealized gain on interest rate swap	6,800,000
Bad debt deductions		29,800,000	29,800,000
Internal Revenue Service (IRS)
Schedule of Income Taxes [Line Items]
Operating loss carryforwards		597,686,000	539,200,000
State and Local Jurisdiction
Schedule of Income Taxes [Line Items]
Operating loss carryforwards		786,400,000	702,800,000
Deferred tax aset related to net operating loss		$ 65,900,000	$ 58,300,000