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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

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- Definition 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 fixed income securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of fixed income. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 + Details
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