SUBSEQUENT EVENT (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Sep. 27, 2014 Subsequent Event lawsuit complaint	Apr. 30, 2012 Convertible Debt	Apr. 23, 2012 Convertible Debt
Subsequent Event [Line Items]
Acquisition share price (in dollars per share)	$ 24.00
Termination fee upon cancellation of merger	$ 116.7
Termination fee payable contingent on ownership change	50.00%
Debt instrument, fixed annual interest rate		2.25%	2.25%
Number of class action lawsuits	3
Number of complaints filed	2

Merger Agreement, Termination Fee Payable Contingent on Ownership Change

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- Definition

Merger Agreement, Termination Fee Upon Cancellation of Merger

+ References

No definition available.

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- Definition

Number of Class Action Lawsuits

+ References

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- Definition

Number of Complaints Filed

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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