Represents amount of fees required to pay if a definitive agreement for an acquisition transaction is entered into before October 21, 2012.

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- Definition

Represents amount of fees required to pay in the event a definitive agreement for an acquisition transaction is entered into before October 21, 2012.

+ Details

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- Definition

Represents the number of claims consolidated.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Definition

The number of claims settled and dismissed during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

+ Details

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended							9 Months Ended
	Sep. 30, 2011 lawsuit	Oct. 31, 2011 United States District Court for the district of Colorado lawsuit	Jul. 31, 2011 United States District Court for the district of Colorado lawsuit	Aug. 31, 2011 Court of Chancery of the state of Delaware lawsuit action	Jul. 31, 2011 Court of Chancery of the state of Delaware lawsuit	Aug. 31, 2011 Jefferson County District Court for the state of Colorado lawsuit	Jul. 31, 2011 Jefferson County District Court for the state of Colorado lawsuit	Oct. 31, 2011 Contractual Obligations	Sep. 30, 2011 Contractual Obligations
Commitment and Contingencies
Number of lawsuits filed	9		2	1	3		3
Number of lawsuits dismissed		2			1
Number of claims consolidated				2		3
Merger Agreement termination fees									$ 14.0
Expense reimbursement amount paid in connection with Merger Agreement Termination								$ 2.0