Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Nov. 30, 2021 |
Nov. 30, 2020 |
Nov. 30, 2021 |
Nov. 30, 2020 |
|
| Receivables [Abstract] | ||||
| Balance at beginning of period | $ 1,016 | $ 874 | $ 961 | $ 715 |
| Bad debt expense, net of recoveries | 249 | 153 | 408 | 933 |
| Accounts written off | 0 | (76) | (104) | (697) |
| Balance at end of period | $ 1,265 | $ 951 | $ 1,265 | $ 951 |