Director/Executive Compensation (Details) (USD $)	12 Months Ended									0 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013 Base Salary [Member] Elective Deferred Compensation Program [Member]	Dec. 31, 2013 Incentive Bonus [Member] Elective Deferred Compensation Program [Member]	Dec. 31, 2013 Director [Member] Deferred Compensation, Share-based Payments [Member]	Dec. 31, 2012 Director [Member] Deferred Compensation, Share-based Payments [Member]	Dec. 31, 2011 Director [Member] Deferred Compensation, Share-based Payments [Member]	Dec. 31, 2013 Officer [Member] Long Term Incentive Plan Single Year Component [Member]	Dec. 31, 2012 Officer [Member] Long Term Incentive Plan Single Year Component [Member]	Dec. 31, 2011 Officer [Member] Long Term Incentive Plan Single Year Component [Member]	Dec. 31, 2013 Officer [Member] Long Term Incentive Plan Multi Year Component [Member]	Feb. 02, 2010 Officer [Member] Long Term Incentive Plan Multi Year Component [Member] Restricted Stock [Member]	Mar. 31, 2013 Officer [Member] Long Term Incentive Plan Multi Year Component [Member] Restricted Stock [Member]	Dec. 31, 2013 Officer [Member] Long Term Incentive Plan Multi Year Component [Member] Restricted Stock [Member]	Dec. 31, 2013 Officer [Member] Incentive Bonus [Member] Annual Incentives Plan [Member]	Dec. 31, 2012 Officer [Member] Incentive Bonus [Member] Annual Incentives Plan [Member]	Dec. 31, 2011 Officer [Member] Incentive Bonus [Member] Annual Incentives Plan [Member]	Dec. 31, 2013 Restricted Stock [Member] Elective Deferred Compensation Program [Member]	Dec. 31, 2012 Restricted Stock [Member] Elective Deferred Compensation Program [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Plan deferral percentage	90.00%	100.00%
Deferred Compensation Arrangement with Individual, Share Equivalent Units Deferred																307,207	286,002
Share equivalent units, deferred			282,242													235,786	228,430
Deferred Compensation Arrangement with Individual, Dividend Units Deferred																71,421	57,572
Deferred director fees, share equivalent units			88,260
Deferred Compensation Arrangement With Individual, Deferred Director Shares			111,916
Deferred Compensation Arrangement With Individual, Deferred Director Dividends			82,066
Distributions from plan in cash			$ 45,000	$ 45,000	$ 55,000
Distribution from plan in shares			20,651	59,988	6,276
Annual Incentives Earned						1,800,000	2,100,000	2,300,000					2,000,000	1,900,000	1,800,000
Immediately vested portion of shares						33.30%
Remaining vesting portion of shares						66.70%
Measurement period									3 years
Frequency metrics and objectives are established									3 years
Grant of restricted shares issued										$ 3,900,000	$ 7,100,000	$ 3,300,000