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CONVERTIBLE NOTES PAYABLE (Details) (USD $) | 3 Months Ended |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2011 | Mar. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2012 Convertible Notes Payable [Member] | Dec. 31, 2011 Convertible Notes Payable [Member] | Dec. 20, 2011 Convertible Notes Payable [Member] | Jan. 31, 2007 Convertible Notes Payable [Member]
Convertible Notes Payable [Abstract] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 115,000,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 3.75%
Debt Instrument, Convertible, Effective Interest Rate |  |  |  | 6.03% |  |  |
Additional non-cash interest expense | 300,000 |  |  |  |  |  |
Redemption of convertible notes payable |  |  |  |  | 114,100,000 |  |
Purchase of Convertible Notes Payable, Average Discount Rate |  |  |  |  | 11.00% |  |
Redemption Of Convertible Notes Payable at Par |  |  |  |  |  | 24,000,000 |
Convertible Notes Payable |  | $ 930,000 | $ 930,000 |  |  |  |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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