XML 87 R63.htm IDEA: XBRL DOCUMENT v3.20.2
Goodwill and Other Long-Lived Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 29, 2020
May 31, 2020
May 31, 2019
[1]
Goodwill [Line Items]      
Impairment losses $ 22,097   $ 22,097
Oil and Gas Equipment      
Goodwill [Line Items]      
Impairment losses   $ 22,097,000  
[1] Fiscal 2020 impairment losses included $22,097,000 of goodwill impairment related to the oil & gas equipment reporting unit.