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INVESTMENTS, AVAILABLE-FOR-SALE SECURITIES (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | $ 0 | $ 0
Available-for-sale Securities Reconciliation [Abstract] |  |
Amortized Cost | 23,517 | 23,604
Gross Unrealized Gains | 164 | 101
Gross Unrealized Losses | (2,006) | (2,006)
Fair Value | 21,675 | 21,699
Available-for-sale securities, unrealized loss positions |  |
Aggregate Fair Value | 21,069 | 21,156
Government-Sponsored Enterprise Obligations [Member] |  |
Available-for-sale Securities Reconciliation [Abstract] |  |
Amortized Cost |  | 37
Gross Unrealized Gains |  | 0
Gross Unrealized Losses | 0 | 0
Fair Value |  | 37
Available-for-sale securities, unrealized loss positions |  |
Aggregate Fair Value | 0 | 37
Auction Rate Securities [Member] |  |
Available-for-sale Securities Reconciliation [Abstract] |  |
Amortized Cost | 23,517 | 23,567
Gross Unrealized Gains | 164 | 101
Gross Unrealized Losses | (2,006) | (2,006)
Fair Value | 21,675 | 21,662
Available-for-sale securities, unrealized loss positions |  |
Aggregate Fair Value | $ 21,069 | $ 21,119

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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