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Stock Based Compensation and Other Benefit Plans (Details 4) (Performance Based Restricted Stock Units [Member], USD $)	12 Months Ended
	Dec. 31, 2011
Performance Based Restricted Stock Units [Member]
Nonvested Shares (Performance-Based)
Outstanding at the beginning of the period, Shares	708,280
Outstanding at beginning of the period, Weighted-Average Grant Date Fair Value	$ 4.88
Forfeited, Shares	(327,050)
Forfeited, Weighted-Average Grant Date Fair Value	$ 6.71
Outstanding at the end of the period, Shares	381,230
Outstanding at the end of the period, Weighted-Average Grant Date Fair Value	$ 3.31

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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