Annual report pursuant to Section 13 and 15(d)

Components of Accumulated Other Comprehensive Loss (Detail)

v3.7.0.1
Components of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
Apr. 30, 2017
Apr. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Foreign currency translation adjustments $ (55,359) $ (36,339)
Deferred compensation and pension plan adjustments, net of taxes (15,127) (21,572)
Interest rate swap unrealized loss, net of taxes (578)  
Accumulated other comprehensive loss, net $ (71,064) $ (57,911)