Stock Based Compensation (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 2005 Stock Incentive Plan [Member]	Jun. 30, 2011 2005 Stock Incentive Plan [Member]	Jun. 30, 2012 2005 Stock Incentive Plan [Member]	Jun. 30, 2011 2005 Stock Incentive Plan [Member]	Jun. 30, 2012 2005 Stock Incentive Plan [Member] Performance Milestones [Member]	Jun. 30, 2011 2005 Stock Incentive Plan [Member] Performance Milestones [Member]	Jun. 30, 2012 2005 Stock Incentive Plan [Member] Performance Milestones [Member]	Jun. 30, 2011 2005 Stock Incentive Plan [Member] Performance Milestones [Member]
Shared Based Compensation (Textual) [Abstract]
Expiry period of option plan					Up to 10 years
Compensation expense			$ 426	$ 564	$ 774	$ 734	$ 199	$ 13	$ 345	$ 28
Cash received from options and warrants exercised			0	0	33	0
Number of stock options to purchase			2,195,306		2,195,306
Range of Exercise Prices, Lower Range Limit					$ 1.00
Range of Exercise Prices, Upper Range Limit					$ 11.11
Weighted average fair value of options granted			$ 2.71	$ 2.18	$ 2.68	$ 2.20
Total intrinsic value of options exercised			0	0	74	0
Total options outstanding	2,195,306	2,057,104	2,195,306		2,195,306
Options nonvested					632,625
Share-based compensation arrangement by share-based payment award, options, vested and expected to vest, outstanding, Number							235,425		235,425
Employee Service Share-Based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition					1 year 10 months 24 days
Employee Service Share-Based Compensation Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options			986		986		433		433
Total unrecognized compensation cost to be recognized over the requisite service period					$ 553
Shares available for future grants under ESOP			1,462,639		1,462,639