Earnings Per Common Share and Share Awards Summary of Information of Fixed Stock Options (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
$21.49 - $27.96
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options exercise price, lower limit	$ 21.49
Options exercise price, upper limit	$ 27.96
Options Outstanding - Number Outstanding	1,000
Options Outstanding - Weighted Average Remaining Contractual Life	4 months 17 days
Options Outstanding - Weighted Average Exercise Price	$ 27.21
Options Exercisable - Number Exercisable	1,000
Options Exercisable - Weighted Average Exercise Price	$ 27.21
$33.32 - $36.79
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options exercise price, lower limit	$ 33.32
Options exercise price, upper limit	$ 36.79
Options Outstanding - Number Outstanding	1,500
Options Outstanding - Weighted Average Remaining Contractual Life	1 year 4 months 17 days
Options Outstanding - Weighted Average Exercise Price	$ 36.79
Options Exercisable - Number Exercisable	1,500
Options Exercisable - Weighted Average Exercise Price	$ 36.79
$21.49 - $36.79
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options exercise price, lower limit	$ 21.49
Options exercise price, upper limit	$ 36.79
Options Outstanding - Number Outstanding	2,500
Options Outstanding - Weighted Average Remaining Contractual Life	11 months 23 days
Options Outstanding - Weighted Average Exercise Price	$ 32.96
Options Exercisable - Number Exercisable	2,500
Options Exercisable - Weighted Average Exercise Price	$ 32.96
$32.00 - $32.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
SARs exercise price, lower limit	$ 32.00
SARs exercise price, upper limit	$ 32.00
SAR Outstanding - Number Outstanding	2,000
SARs Outstanding - Weighted Average Remaining Contractual Life	2 years 4 months 21 days
SARs - Weighted Average Exercise Price	$ 32.00
SARs Exercisable - Number Exercisable	2,000
SARs Exercisable - Weighted Average Exercise Price	$ 32.00
$33.31 - $33.31
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
SARs exercise price, lower limit	$ 33.31
SARs exercise price, upper limit	$ 33.31
SAR Outstanding - Number Outstanding	2,500
SARs Outstanding - Weighted Average Remaining Contractual Life	3 years 4 months 17 days
SARs - Weighted Average Exercise Price	$ 33.31
SARs Exercisable - Number Exercisable	2,500
SARs Exercisable - Weighted Average Exercise Price	$ 33.31
$36.80 - $71.59
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
SARs exercise price, lower limit	$ 36.80
SARs exercise price, upper limit	$ 71.59
SAR Outstanding - Number Outstanding	12,000
SARs Outstanding - Weighted Average Remaining Contractual Life	4 years 1 month 17 days
SARs - Weighted Average Exercise Price	$ 53.28
SARs Exercisable - Number Exercisable	11,250
SARs Exercisable - Weighted Average Exercise Price	$ 52.06
$32.00 - $71.59
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
SARs exercise price, lower limit	$ 32.00
SARs exercise price, upper limit	$ 71.59
SAR Outstanding - Number Outstanding	16,500
SARs Outstanding - Weighted Average Remaining Contractual Life	3 years 9 months 22 days
SARs - Weighted Average Exercise Price	$ 47.67
SARs Exercisable - Number Exercisable	15,750
SARs Exercisable - Weighted Average Exercise Price	$ 46.54