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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jan. 31, 2018
Oct. 31, 2017
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 297 $ 175
Shares of benefical interest, no par value
Shares of benefical interest, authorized 8,000,000 8,000,000
Shares of benefical interest, issued 6,993,152 6,993,152
Vested share units to trustees, issued 135,381 122,092
Treasury stock at cost, shares 253,083 253,083