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Stock-Based Compensation (Details 12) (2012 Employee Stock Purchase Plan [Member])	12 Months Ended
	Dec. 31, 2012
2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price	95.00%
Maximum shares authorized	2,500,000
Employee purchased shares	17,300
Shares available for future issuance	2,500,000

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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