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Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended			0 Months Ended
	Mar. 31, 2013 plan	Mar. 31, 2012	Mar. 31, 2013 Stock Incentive Plan 2011	May 08, 2013 Subsequent Event Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 1.8	$ 1.9
Number of share-based compensation plans	5
Number of shares available for grant			1,293,247
Additional shares authorized for grant				1,543,000
Total number of shares authorized				6,043,000
Grants in period, weighted average grant date fair value (dollars per share)	$ 1.61

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

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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