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FAIR VALUE MEASUREMENTS (Details) (USD $) | 3 Months Ended | 9 Months Ended |  | 9 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012 | Sep. 30, 2013 SERP [Member] | Dec. 31, 2012 SERP [Member] | Sep. 30, 2013 Recurring [Member] | Dec. 31, 2012 Recurring [Member] | Sep. 30, 2013 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Dec. 31, 2012 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Sep. 30, 2013 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] | Dec. 31, 2012 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member] | Sep. 30, 2013 Recurring [Member] Significant Unobservable Inputs (Level 3) [Member] | Dec. 31, 2012 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 | $ 100,000 |  | $ 100,000 |  | $ 100,000 |  |  |  |  |  |  |  |  |  |
Gross unrealized losses | 100,000 |  | 100,000 |  | 100,000 |  |  |  |  |  |  |  |  |  |
Gross unrealized gains associated with the investment held in the rabbi trust | 46,000 | (95,000) | 28,000 | (187,000) |  | 400,000 | 400,000 |  |  |  |  |  |  |  |
Financial Assets Fair Value [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments held in rabbi trust |  |  |  |  |  |  |  | 3,238,000 | 6,014,000 | 3,238,000 | 6,014,000 | 0 | 0 | 0 | 0
Marketable Securities |  |  |  |  |  |  |  | 3,000 | 2,000 | 3,000 | 2,000 | 0 | 0 | 0 | 0
Total |  |  |  |  |  |  |  | $ 3,241,000 | $ 6,016,000 | $ 3,241,000 | $ 6,016,000 | $ 0 | $ 0 | $ 0 | $ 0

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