Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended				2 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Director [Member]	Mar. 31, 2013 Employees [Member]	Jan. 31, 2012 Performance Shares [Member]	Mar. 31, 2013 Performance Shares [Member] Condition	Dec. 31, 2012 Performance Shares [Member] Condition
Stock-Based Compensation (Textual) [Abstract]
Stock options generally vest over			3 years	4 years	3 years
Stock options granted					697,500
Performance based stock options granted - vest upon goal achievement					174,375
Performance based stock options granted - time vest beginning upon goal achievement					523,125
Number of specified performance conditions achieved							3
Options to purchase shares vested immediately							80,213
Options to purchase shares began vesting							240,640
Number of specified performance conditions not achieved						5
Stock options forfeited						265,597
Stock-Based Compensation (Additional Textual) [Abstract]
Recorded charges for stock-based compensation expense	$ 253,000	$ 588,000
Option to purchase common stock granted to employees and directors	0	37,500