XML 53 R42.htm IDEA: XBRL DOCUMENT v3.19.2
Accounts Receivable (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
May 31, 2019
Feb. 28, 2019
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Balance at beginning of period $ 4,561 $ 2,167
Charged to expense   3,247
Recovery of expenses (195)  
Adjustments [1] 86 (853)
Balance at end of period 4,452 4,561
Unbilled contracts receivable $ 43,300 $ 40,200
One Customer [Member] | Accounts Receivable [Member] | Customer Concentration Risk    
Schedule of Customer Receivables [Line Items]    
Concentration risk, percentage   10.00%
[1]
Represents foreign currency translation adjustments and amounts written-off as uncollectible accounts receivable.