Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Plans (Details)

v2.4.0.8
Pension and Other Postretirement Benefit Plans (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Pension [Member]
       
Net periodic benefit cost [Abstract]        
Service cost $ 1,582 $ 1,685 $ 3,164 $ 3,370
Interest cost 2,213 1,913 4,426 3,826
Expected return on plan assets (2,396) (2,243) (4,792) (4,486)
Amortization [Abstract]        
Prior service cost (52) (52) (104) (104)
Net actuarial loss (gain) 991 1,806 1,982 3,612
Net benefit cost 2,338 3,109 4,676 6,218
Other Postretirement [Member]
       
Net periodic benefit cost [Abstract]        
Service cost 109 199 218 398
Interest cost 230 282 460 564
Expected return on plan assets 0 0 0 0
Amortization [Abstract]        
Prior service cost (21) (68) (43) (136)
Net actuarial loss (gain) (49) 110 (98) 220
Net benefit cost 269 523 537 1,046
Benefit plan contributions [Abstract]        
Other postretirement plan     464  
Additional contributions expected in fiscal 2014     462  
Supplemental Retirement Plan [Member]
       
Benefit plan contributions [Abstract]        
Supplemental retirement plan     362  
Additional contributions expected in fiscal 2014     $ 359