Share-Based Compensation (Details) - Changes in the stock option plans (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Changes in the stock option plans [Abstract]
Number of Shares Authorized,Balance	5,026,500	29,000	39,000
Number of Shares Granted,Balance	6,500	12,000	23,000
Number of Shares Available,Balance	5,020,000	17,000	16,000
Weighted Average Exercise Price, Balance (in Dollars per share)	$ 5.57	$ 4.99	$ 4.51
Authorized	5,000,000
Authorized	5,000,000
Expired	(2,500)	(10,000)
Expired	(5,500)	(11,000)
Expired	3,000	1,000
Expired (in Dollars per share)	$ 4.30	$ 3.97