Stock Based Compensation (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012 Y	Dec. 31, 2011	May 16, 2011
Stock Based Compensation (Textual) [Abstract]
Authorized shares of stock, option plan, maximum			1,500,000
Aggregate number of shares issued in respect of restricted stock awards		350,000
Options available for award each plan year			1,150,000
Maximum number of shares of restricted stock or shares subject to a restricted stock units award granted		50,000
Maximum number of options and stock appreciation rights		100,000
Percentage of restricted stock and restricted stock units vest		25.00%
Vesting period of awards		1/3 per year over the first three anniversaries of the award
Recognition of compensation expense	$ 389	$ 126
Maximum term for awards granted (years)	10
Shares issued related stock option exercises	5,650	24,160
Total intrinsic value of options exercised	$ 79	$ 353
Restricted Stock [Member]
Stock Based Compensation (Textual) [Abstract]
Shares, Granted	52,700
Vesting period	4 years