Stockholders' Equity (Details 4) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Repurchases of common stock
Total Number of Shares Purchased	3,113,806	3,113,806
Average Price Paid per Share	$ 5.18	$ 5.18
Total Number of Shares Purchased as Part of Publicity Announced Plans or Programs		3,113,806
Approximate Dollar Value of Shares that May Yet be Purchased Under the Plans or Programs		$ 3,861,449
April 1-30, 2012 [Member]
Repurchases of common stock
Total Number of Shares Purchased
Average Price Paid per Share
Total Number of Shares Purchased as Part of Publicity Announced Plans or Programs
Approximate Dollar Value of Shares that May Yet be Purchased Under the Plans or Programs
May 1-31, 2012 [Member]
Repurchases of common stock
Total Number of Shares Purchased	2,579,406	2,579,406
Average Price Paid per Share		$ 5.13
Total Number of Shares Purchased as Part of Publicity Announced Plans or Programs		2,579,406
Approximate Dollar Value of Shares that May Yet be Purchased Under the Plans or Programs		6,694,360
June 1-30, 2012 [Member]
Repurchases of common stock
Total Number of Shares Purchased	534,400	534,400
Average Price Paid per Share		$ 5.27
Total Number of Shares Purchased as Part of Publicity Announced Plans or Programs		534,400
Approximate Dollar Value of Shares that May Yet be Purchased Under the Plans or Programs		$ 3,861,449