Stock Options and Restricted Stock (Details) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended			1 Months Ended
	Mar. 31, 2012 Officers	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 IncentivePlans	Jun. 30, 2011	Jun. 30, 2012 2010 Non-Employee Director Restricted Stock Plan [Member]	May 31, 2012 Officer [Member]	Mar. 31, 2012 Executive officer [Member]
Stock Options and Restricted Stock (Textual) [Abstract]
Restricted common stock, granted shares						7,833	4,000	2,331
Restricted common stock, vested shares						9,513
Stock Options and Restricted Stock (Additional Textual) [Abstract]
Number of equity incentive plans				3
Restricted common stock, value		$ 200,000		$ 200,000
Restricted common stock, vesting date				Jun. 15, 2012
Stock options exercised, shares				22,800	217,750
Proceeds from stock option exercised				205,000	1,993,000
Share-based compensation expense		$ 100,000	$ 100,000	$ 200,000	$ 300,000
Number of executive officers	2