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Restricted Stock Granted, Vested, Forfeited and Outstanding (Details) (Restricted Stock [Member], USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Restricted Stock [Member]
   
Restricted Stock, Number of Shares [Roll Forward]    
Unvested restricted shares outstanding, beginning 836,000 689,000
Granted, restricted shares 833,000 335,000
Vested, restricted shares (100,000) (98,000)
Forfeited, restricted shares (275,000) (90,000)
Unvested restricted shares outstanding, ending 1,294,000 836,000
Restricted Stock, Weighted Average Grant Price [Roll Forward]    
Unvested restricted shares, weighted average grant price, beginning $ 2.15 $ 2.13
Granted, weighted average grant price $ 2.65 $ 2.16
Vested, weighted average grant price $ 2.11 $ 1.68
Forfeited, weighted average grant price $ 2.36 $ 2.52
Unvested restricted shares, weighted average grant price, ending $ 2.43 $ 2.15