Annual report pursuant to Section 13 and 15(d)

Segments - Long Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Controlling Countries over Ten Percent (Detail)

v3.19.2
Segments - Long Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Controlling Countries over Ten Percent (Detail) - USD ($)
$ in Thousands
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2017
Segment Reporting Information [Line Items]      
Long-lived assets [1] $ 131,505 $ 119,901 $ 109,567
UNITED STATES      
Segment Reporting Information [Line Items]      
Long-lived assets [2] 98,455 80,424 70,949
Other Countries      
Segment Reporting Information [Line Items]      
Long-lived assets $ 33,050 $ 39,477 $ 38,618
[1] As of the end of the fiscal year.
[2] Includes Corporate long-lived assets