Stockholders' Equity (Summary Of Information About The Common Stock) (Details)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Stockholders' Equity [Abstract]
Common stock authorized	30,000,000	30,000,000	30,000,000
Common stock issued	25,070,000	24,826,000	24,738,000
Treasury stock	2,684,000	2,684,000	2,684,000