Balance Sheet Parentheticals (USD $)	Mar. 31, 2012	Dec. 31, 2011
Shareholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	23,659,339	23,634,958
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Treasury shares, at cost	6,944	2,938