XML 43 R53.htm IDEA: XBRL DOCUMENT v3.2.0.727
Employee Benefit and Retirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Funded Status) (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2013
Compensation and Retirement Disclosure [Abstract]      
Projected benefit obligation at beginning of year $ 144,142 $ 149,429  
Interest cost 6,466 6,203 $ 6,261
Acturial (gains) and losses 24,168 (7,615)  
Benefits paid (4,790) (3,875)  
Projected benefit obligation at end of year 169,986 144,142 149,429
Fair value of plan assets at beginning of year 102,599 95,733  
Actual return on plan assets 6,583 8,483  
Company contributions 4,269 2,258  
Benefits paid (4,790) (3,875)  
Fair value of plan assets at end of year 108,661 102,599 $ 95,733
Funded status of the plan (61,325) (41,543)  
Unrecognized net actuarial loss 66,975 42,589  
Prepaid (accrued) benefit cost $ 5,650 $ 1,046