Compensation Programs (Compensation Cost) (Details) (USD $) In Thousands, except Share data	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Dec. 31, 2009
Total Grants		0	0	30,000
Related Cost Recognized in General and Administrative Expense	$ 245,000	$ 454,000
2008 [Member]
Month of Grant		July 2008
Total Grants		225,000
Related Cost Recognized in General and Administrative Expense	108,000	200,000
2009 [Member]
Month of Grant		July 2009
Total Grants		225,000
Related Cost Recognized in General and Administrative Expense	108,000	200,000
2010 [Member]
Month of Grant		July 2010
Total Grants		60,000
Related Cost Recognized in General and Administrative Expense	$ 29,000	$ 54,000