Employee Benefit Plans (Details) (USD $)	1 Months Ended	3 Months Ended				9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended				1 Months Ended
	Jan. 31, 2014 Pension Plans	Sep. 30, 2014 Pension Plans	Jun. 30, 2014 Pension Plans	Mar. 31, 2014 Pension Plans	Sep. 30, 2013 Pension Plans	Sep. 30, 2014 Pension Plans	Sep. 30, 2013 Pension Plans	Sep. 30, 2014 Postretirement Benefit Plans	Sep. 30, 2013 Postretirement Benefit Plans	Sep. 30, 2014 Postretirement Benefit Plans	Sep. 30, 2013 Postretirement Benefit Plans	Sep. 30, 2014 Supplemental Employee Retirement Plan	Mar. 31, 2014 Supplemental Employee Retirement Plan	Sep. 30, 2013 Supplemental Employee Retirement Plan	Mar. 31, 2013 Supplemental Employee Retirement Plan	Oct. 31, 2014 Subsequent Event Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Reclassification of Rabbi Trust investments												$ 17,100,000
Components of net periodic benefit cost:
Service cost		1,902,000			1,326,000	5,157,000	3,980,000	87,000	111,000	206,000	334,000
Interest cost		1,157,000			1,093,000	3,974,000	3,269,000	137,000	175,000	587,000	526,000
Expected long-term return on assets		(1,157,000)			(1,321,000)	(4,067,000)	(3,966,000)	(246,000)	(212,000)	(1,016,000)	(638,000)
Actuarial (Gain) Loss		1,296,000			1,760,000	4,115,000	5,417,000	(151,000)	0	(572,000)	0
Transition amortization								9,000	63,000	39,000	189,000
Prior service cost amortization		63,000			62,000	177,000	185,000
Settlement charge		370,000			18,000	4,043,000	161,000							18,000
Net periodic expense		3,631,000			2,938,000	13,399,000	9,046,000	(164,000)	137,000	(756,000)	411,000
Employer Contributions in Current Fiscal Year, Required Contributions		7,700,000				7,700,000
Defined Benefit Plan, Contributions by Employer	3,000,000															10,000,000
Benefit payments made in current fiscal year		74,000				1,000,000
Estimated future benefit payments in current fiscal year		5,200,000				5,200,000
Settlement charges												0	400,000	64,000	500,000
Settlement charges expensed		300,000	400,000	6,900,000											100,000
Settlement charges in discontinued operations				$ 3,700,000