FAIR VALUE MEASUREMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	$ 100,000	$ 5,700,000
Gross unrealized losses	100,000	300,000
Transfers in out between levels	0	0
Recurring [Member]
Financial Assets Fair Value [Abstract]
Investments held in Rabbi Trust	6,014,000	5,786,000
Marketable Securities	2,000
Publicly-traded equity securities		727,000
Fixed income securities		5,004,000
Total	6,016,000	11,517,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets Fair Value [Abstract]
Investments held in Rabbi Trust	6,014,000	5,786,000
Marketable Securities	2,000
Publicly-traded equity securities		727,000
Fixed income securities		0
Total	6,016,000	6,513,000
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Assets Fair Value [Abstract]
Investments held in Rabbi Trust	0	0
Marketable Securities	0
Publicly-traded equity securities		0
Fixed income securities		5,004,000
Total	0	5,004,000
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial Assets Fair Value [Abstract]
Investments held in Rabbi Trust	0	0
Marketable Securities	0
Publicly-traded equity securities		0
Fixed income securities		0
Total	0	0
Investments held in Rabbi Trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	6,000,000	5,800,000
Gross unrealized losses	400,000	200,000
Publicly-traded equity securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchase of available-for-sale securities		100,000
Fixed income securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchase of available-for-sale securities		$ 5,000,000