XML 59 R44.htm IDEA: XBRL DOCUMENT v3.7.0.1
Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2015
Receivables [Abstract]      
Balance at beginning of period $ 2,041 $ 2,158 $ 1,380
Bad debt expense 118 206 799
Recoveries 145 47 64
Accounts written off (630) (370) (85)
Balance at end of period $ 1,674 $ 2,041 $ 2,158