Stock-Based Compensation (Number Of Shares Vested ) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Stock-Based Compensation
Restricted shares	8,000	42,300	236,267	236,292
Stock awards with immediate vesting granted to managerial employees	32,500	43,700	32,500	403,700
Stock awards with immediate vesting granted to our directors pursuant to the Non-Employee Director Compensation Policy	39,609	33,384	68,013	62,240
Total shares	80,109	119,384	336,780	702,232