Pension and Post-Retirement Plans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Plan [Member] | Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Other Postretirement Benefit Plan [Member] | Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost on the projected benefit obligation	100,000	100,000	300,000	300,000
Net periodic (benefit) cost	100,000	100,000	300,000	300,000
Other Postretirement Benefit Plan [Member] | Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost on the projected benefit obligation	0	0	0	0
Net periodic (benefit) cost	0	0	0	0
Pension And SERP Benefits [Member] | Domestic [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost on the projected benefit obligation	1,600,000	1,700,000	4,800,000	5,200,000
Expected return on plan assets	(2,400,000)	(2,400,000)	(7,200,000)	(7,300,000)
Net periodic (benefit) cost	(800,000)	(700,000)	(2,400,000)	(2,100,000)
Pension And SERP Benefits [Member] | Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	200,000	200,000	600,000	600,000
Interest cost on the projected benefit obligation	500,000	800,000	1,500,000	2,300,000
Expected return on plan assets	(500,000)	(900,000)	(1,500,000)	(2,700,000)
Net periodic (benefit) cost	$ 200,000	$ 100,000	$ 600,000	$ 200,000