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PREFERRED STOCK PURCHASE RIGHTS (Details) (USD $) |  |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Preferred stock purchase rights plan item | Dec. 31, 2012 Preferred stock purchase rights plan Series B junior participating preferred stock item
Preferred Stock Purchase Rights |  |  |  |
Preferred share purchase right on each share of common stock |  |  | 0.5 |
Minimum percentage of common stock acquired by a person or group to entitle right holder to purchase entity's common stock having market value twice the exercise price |  |  | 15.00% |
Number of shares callable by warrants or rights |  |  |  | 0.001
Par value of preferred stock (in dollars per share) | $ 0.01 | $ 0.01 |  | $ 0.01
Purchase price of preferred stock (in dollars per share) |  |  |  | $ 150
Number of voting rights for each share of preferred stock |  |  |  | 2,000
Minimum preferential quarterly dividend payment per share (in dollars per share) |  |  |  | $ 1
Minimum preferential quarterly dividend payment in multiplier of amount paid to holders of common stock |  |  |  | 2,000
Preferred stock reserved (in shares) |  |  |  | 99,000
Redemption price per right at the option of the Board of Directors (in dollars per right) |  |  | 0.01 |

X
- Definition Represents the minimum percentage of common stock acquired by a person or group which would entitle the right holder to purchase, at the current exercise price, the entity's common stock having a market value of twice the exercise price. + References No definition available. + Details
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Period Type: | duration

X
- Definition Represents the minimum preferential quarterly dividend payment in multiplier of amount paid to holders of common stock. + References No definition available. + Details
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- Definition Represents the minimum preferential quarterly dividend payment per share of preferred stock. + References No definition available. + Details
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X
- Definition Represents the number of rights for each outstanding share of common stock. + References No definition available. + Details
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X
- Definition Represents the number of preferred stock shares reserved under the preferred stock purchase rights plan. + References No definition available. + Details
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X
- Definition The number of voting rights for each share of preferred stock. + References No definition available. + Details
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- Definition Represents the redemption price per right, which will expire unless previously exercised or redeemed. + References No definition available. + Details
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- Definition The exercise price of each class of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 4 -Article 4 + Details
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- Definition The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 2 -Article 4 + Details
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- Definition Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 3, 4, 5, 6, 7, 8 -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 AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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