Employee Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Settlement charges			$ (2,200,000)	$ (2,400,000)
Defined contribution plans	4,019,000	3,403,000	14,091,000	13,046,000
Total	7,161,000	7,431,000	19,023,000	20,362,000
Employer contributions to SERP			3,500,000
Expected contributions to SERP			1,000,000
Settlement charges			2,200,000	2,400,000
Assets Held-in-trust, Current	19,000,000		19,000,000
Life Settlement Contracts, Investment Method, Face Value	12,800,000		12,800,000
Cash Surrender Value of Life Insurance	14,500,000		14,500,000		13,800,000
Deferred compensation	41,300,000		41,300,000		38,900,000
Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	816,000	910,000	2,528,000	2,586,000
Expected return on plan assets, net of expenses	(1,144,000)	(1,098,000)	(3,444,000)	(3,274,000)
Settlement charges	1,031,000	1,462,000	1,031,000	1,462,000
Amortization of net (gain)/loss	291,000	729,000	779,000	2,379,000
Total for defined benefit plans	994,000	2,003,000	894,000	3,153,000
Settlement charges	(1,031,000)	(1,462,000)	(1,031,000)	(1,462,000)
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Supplemental executive retirement plan ("SERP")	2,148,000	2,025,000	4,038,000	4,163,000
Amortization of actuarial losses	$ 600,000	$ 700,000	$ 1,600,000	$ 2,100,000