Earnings Per Share (Details Textual)	12 Months Ended			3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jun. 30, 2010 Common Stock
Class of Stock [Line Items]
Common Stock, shares issued in public offering				8,050,000
Earnings Per Share (Textual) [Abstract]
Outstanding Stock options antidilutive	374,000	420,000	495,000
Common Stock, shares issued	312,000	255,000	129,000
Common Stock, shares repurchased			100,000