Retirement Agreements And Other Postretirement Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Service cost - benefits earned during the year	$ 3,667	$ 3,945	$ 7,334	$ 7,891
Interest cost on the projected benefit obligation	7,618	7,103	15,236	14,206
(Accretion) amortization of unrecognized prior service cost	555	(379)	1,109	(759)
Amortization of unrecognized losses	0	1,574	0	3,147
Net periodic benefits costs	11,840	12,243	23,679	24,485
Employee benefits and other payments	$ 6,938,000		$ 6,938,000		$ 6,580,000