Consolidated Balance Sheets Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	35,000
Preferred stock, shares outstanding	0	34,900
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	25,362,946	24,658,985
Common stock, shares outstanding	19,197,899	18,060,206
Treasury stock, shares outstanding	6,165,047	6,598,779