Share-Based Compensation Plan Schedule of options outstanding and exercisable (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00	$ 15.30	$ 17.32	$ 20.40
Options Outstanding (in shares)	30,012	58,513	82,171	160,171
Options Exercisable (in shares)	30,012	58,513	82,171
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	25,012
Remaining Contractual Life	4 years 2 months 12 days
Options Exercisable (in shares)	25,012
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	5,000
Remaining Contractual Life	4 years 10 months 2 days
Options Exercisable (in shares)	5,000
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	30,012.000
Remaining Contractual Life	4 years 3 months 21 days
Options Exercisable (in shares)	30,012.000