DISCLOSURES ABOUT FAIR VALUES OF FINANCIAL INSTRUMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Unrealized gain on equity investments	$ 300,000	$ 300,000
Loss due to property and equipment impairment	3,500,000	0	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Equity investments	212,000	1,028,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Property and equipment, net	14,401,000
Loss due to property and equipment impairment	3,500,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Equity investments	212,000	1,028,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Property and equipment, net	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Equity investments	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Property and equipment, net	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Equity investments	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Property and equipment, net	14,401,000
Carrying Value [Member]
ASSETS [Abstract]
Cash and cash equivalents	10,182,000	2,652,000
Investments	900,000	1,840,000
Cash and escrow deposits - restricted	2,714,000	3,150,000
Other assets (long-term):
Restricted cash	1,956,000	1,996,000
Security deposits	23,000	19,000
LIABILITIES [Abstract]
Long-term debt, including current maturities	181,715,000	88,241,000
Estimated Fair Value [Member]
ASSETS [Abstract]
Cash and cash equivalents	10,182,000	2,652,000
Investments	900,000	1,840,000
Cash and escrow deposits - restricted	2,714,000	3,150,000
Other assets (long-term):
Restricted cash	1,956,000	1,996,000
Security deposits	23,000	19,000
LIABILITIES [Abstract]
Long-term debt, including current maturities	$ 186,703,000	$ 94,901,000