Stockholders Equity (Details Textual) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended		3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Cumulative Dividends [Member]	Jun. 30, 2012 Employee Stock [Member]	Mar. 31, 2012 General and Administrative Expense [Member]	Jun. 30, 2012 Restricted Stock [Member]	Jun. 30, 2012 Restricted Stock [Member]	Jun. 30, 2011 Restricted Stock [Member]	Jun. 30, 2011 Employees Stock Purchase Plan [Member]
Stockholders' Equity (Textual) [Abstract]
Shares authorized remaining be sold under equity offering program	2,791,300
Stock excluded from the calculation of diluted loss per common share								1,034,520			81,935
Share-based Compensation			$ 1,653,000	$ 1,602,000				$ 76,000
Issued restricted common stock to its employees under stock based incentive plan									103,225	79,169
Shares withheld from its officers to pay taxes									2,342	2,568
Option to purchase to common stock						25,000
Discount on market price on the date of grant						85.00%
Discount on market price on the date of exercise						85.00%
Expiration Date						27 months
Amount of employee stock purchase plan expenses recorded in general and administrative expenses							$ 200,000
Common stock optioned to purchase not exercised expired	182,315		182,315
Dividends declared per share to common stockholders per quarter paid			$ 0.60		$ 0.30
Stockholders Equity (Additional Textual) [Abstract]
Dividends per share to common stockholders declared	$ 0.30	$ 0.30	$ 0.60	$ 0.60