Annual report pursuant to Section 13 and 15(d)

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

v3.7.0.1
Long Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Controlling Countries over Ten Percent (Detail) - USD ($)
$ in Thousands
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2015
Segment Reporting Information [Line Items]      
Long-lived assets [1] $ 109,567 $ 95,436 $ 62,088
UNITED STATES      
Segment Reporting Information [Line Items]      
Long-lived assets [2] 70,949 64,525 50,103
Other Countries      
Segment Reporting Information [Line Items]      
Long-lived assets $ 38,618 $ 30,911 $ 11,985
[1] As of the end of the fiscal year.
[2] Includes Corporate long-lived assets