Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]	0000006207 (http://www.sec.gov/CIK)
Class of Stock [Axis]	Class of Stock [Domain]

Statement [Line Items]	Period [Axis]
	2015-05-01 - 2016-04-30	2014-05-01 - 2015-04-30
Interest cost on projected benefit obligation	1,284,000	1,370,000
Expected return on assets	(2,051,000)	(2,230,000)
Plan expenses	251,000	247,000
Recognized net actuarial loss	1,534,000	1,257,000
Settlement loss	0	1,067,000
Total cost recognized in pretax income	1,018,000	1,711,000
Cost recognized in pretax other comprehensive income	434,000	2,674,000
Net periodic pension cost	1,452,000	4,385,000