Common Stock (Details Textual) (USD $)	12 Months Ended				1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jan. 31, 2012 Sagard [Member]	Dec. 31, 2012 Sagard [Member]	Dec. 31, 2011 Sagard [Member]	Dec. 31, 2009 Sagard [Member]	Dec. 31, 2012 Two Thousand and Eleven Plan [Member]	Dec. 31, 2012 Equity Compensation Award [Member]
Common Stock, Shares, Outstanding	19,049,672
Common Stock, Capital Shares Reserved for Future Issuance									1,147,780	835,692
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Share Price		$ 12.30						$ 7
Beneficial Ownership Maximum Percentage				23.00%
Common Stock Purchased In Open Market						173,353	101,478
Common Stock Privately Purchased					350,000
Common Stock Purchase Price		$ 4,305,000
Common Stock Beneficial Ownership Number						3,509,774	3,509,774
Common Stock Beneficial Ownership Percentage						18.40%	18.40%
Purchase Price Percentage		1.00%
Liquidated Damages Amount		2,400,000
Shareholders Indemnification Amount		25,000
Stock Repurchased During Period, Shares	180,000	125,000	37,000
Repurchases of common stock in the open market	(3,433,000)	(1,414,000)	(266,000)
Stock Repurchase Available Amount	1,059,000
Shares Sold In Private Placement				2,857,143
Securities Purchasement Agreement Purchase Price				$ 20,000,000