Share Based and Deferred Compensation (Details Textuals) (Details) (USD $)	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended			9 Months Ended		0 Months Ended	3 Months Ended		9 Months Ended			9 Months Ended			0 Months Ended			12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013 Stock Option [Member]	Sep. 30, 2013 Stock Option [Member]	Sep. 30, 2014 Restricted Stock [Member]	Sep. 30, 2013 Restricted Stock [Member]	Sep. 30, 2014 Restricted Stock [Member]	Sep. 30, 2013 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member]	Sep. 30, 2014 Restricted Stock [Member] Minimum [Member]	Sep. 30, 2014 Restricted Stock [Member] Maximum [Member]	Mar. 01, 2014 Restricted Performance Share Units Plan [Member]	Sep. 30, 2014 Restricted Performance Share Units Plan [Member]	Sep. 30, 2013 Restricted Performance Share Units Plan [Member]	Sep. 30, 2014 Restricted Performance Share Units Plan [Member]	Sep. 30, 2013 Restricted Performance Share Units Plan [Member]	Feb. 07, 2014 Restricted Performance Share Units Plan [Member]	Sep. 30, 2014 Executive Officer [Member] Restricted Stock [Member]	Mar. 12, 2014 Executive Officer [Member] Restricted Stock [Member]	Mar. 11, 2014 Executive Officer [Member] Restricted Stock [Member]	Mar. 11, 2014 Executive Officer [Member] Restricted Performance Share Units Plan [Member]	Mar. 12, 2014 Executive Officer [Member] Restricted Performance Share Units Plan [Member]	Mar. 01, 2012 Executive Officer [Member] Restricted Performance Share Units Plan [Member]	Feb. 25, 2014 Executive Officer [Member] Restricted Performance Share Units Plan [Member]	Feb. 25, 2013 Executive Officer [Member] Restricted Performance Share Units Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized																		69,794	131,641	134,284	61,720	265,222.00		231,093
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																	2,792
Voluntary Termination Of Employment Terms						after reaching age 57 and accumulating at least 15 years of service with the Company								after reaching age 57 and accumulating at least 15 years of service with the Company
Accumulated Service Period For Voluntary Termination						15 years								15 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Term, Minimum	3 years					3 years			3 years	7 years				3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						three years from the initial grant dates
Maximum Percentage Of Participants Base Units														200.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value																				$ 2,624,000	$ 1,225,000	$ 4,273,000	$ 4,137,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number				549,175		549,175		563,713												134,284.00	61,720.00	211,521.00		203,395.00
Vested/Exerciseable, shares	2,808,784
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition						1 year 8 months 2 days								1 year 2 months 2 days
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized				2,500,000		2,500,000						2,700,000		2,700,000
Allocated Share-based Compensation Expense		200,000	600,000	400,000	900,000	2,300,000	2,600,000					500,000	1,300,000	2,800,000	3,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period						234,169					150,829
Age Limit Of Voluntary Termination Of Employment																	57
Dividends Payable, Amount Per Share																$ 0.15
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost			$ 100,000	$ 100,000	$ 100,000	$ 500,000	$ 400,000					$ 200,000	$ 200,000	$ 900,000	$ 600,000