Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended		1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2013 Lawsuit	Mar. 31, 2012	Mar. 31, 2012 Turner [Member]	Jul. 31, 2011 Turner [Member]	Mar. 31, 2012 Turner [Member]	Dec. 31, 2011 Turner [Member]	Mar. 31, 2013 Turner [Member]	Dec. 31, 2012 Turner [Member]	May 04, 2012 Turner [Member]	Apr. 20, 2012 Turner [Member]
Commitments and Contingencies (Textual) [Abstract]
Jury decision against company				$ 10,000,000
Jury award value			4,400,000
Jury decision against company which adjusted to award									5,500,000	5,500,000
Benefit on reversal of accrued litigation					2,200,000
Benefit on reversal of accrued litigation leaving a reserve			1,100,000		1,100,000		1,100,000	1,100,000
Litigation judgment		(2,200,000)				3,300,000
Commitments and Contingencies (Additional Textual) [Abstract]
Number of lawsuits against Company	26
Amount of settlement offer	$ 800,000