Commitments And Contingencies Stock buyback program (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended	41 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Common Stock [Member]	Jun. 30, 2012 Common Stock [Member]	Jun. 30, 2012 Common Stock [Member]
Stock buy back program [Line Items]
Stock Repurchase Program, Authorized Amount					$ 2,000,000
Stock Repurchased During Period, Shares			211,177	272,057,000	854,882
Payments for Repurchase of Common Stock	597,000	0			1,600,000
Treasury Stock Acquired, Average Cost Per Share					$ 1.91
Letters of Credit Outstanding, Amount	$ 200,000