This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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FAIR VALUE MEASUREMENTS (Details) (USD $)	3 Months Ended			9 Months Ended
FAIR VALUE MEASUREMENTS (Details) (USD $)	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
FAIR VALUE MEASUREMENTS [Abstract]
Fair value of investments held in a Rabbi Trust	$ 6,000,000			$ 6,000,000		$ 5,800,000
Unrealized gain of investments held in a Rabbi Trust	400,000			400,000		200,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,200,000			5,200,000		5,700,000
Gross unrealized losses	100,000			100,000		300,000
Other-than-temporary impairment loss on investment	297,000	500,000	0	775,000	0
Transfers in out between levels				0	0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,200,000			5,200,000		5,700,000
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	11,231,000			11,231,000		11,517,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	11,231,000			11,231,000		11,517,000
Recurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	6,197,000			6,197,000		6,513,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	6,197,000			6,197,000		6,513,000
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,034,000			5,034,000		5,004,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,034,000			5,034,000		5,004,000
Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Investments held in Rabbi Trust [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,983,000			5,983,000		5,786,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,983,000			5,983,000		5,786,000
Investments held in Rabbi Trust [Member] \| Recurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,983,000			5,983,000		5,786,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,983,000			5,983,000		5,786,000
Investments held in Rabbi Trust [Member] \| Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Investments held in Rabbi Trust [Member] \| Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Publicly-traded equity securities [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	214,000			214,000		727,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	214,000			214,000		727,000
Publicly-traded equity securities [Member] \| Recurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	214,000			214,000		727,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	214,000			214,000		727,000
Publicly-traded equity securities [Member] \| Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Publicly-traded equity securities [Member] \| Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Fixed income securities [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,034,000			5,034,000		5,004,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,034,000			5,034,000		5,004,000
Fixed income securities [Member] \| Recurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	0			0		0
Fixed income securities [Member] \| Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	5,034,000			5,034,000		5,004,000
Financial Assets Fair Value [Abstract]
Assets at Fair Value	5,034,000			5,034,000		5,004,000
Fixed income securities [Member] \| Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Combined fair value of available-for-sale securities	0			0		0
Financial Assets Fair Value [Abstract]
Assets at Fair Value	$ 0			$ 0		$ 0