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Accounts Receivable, Net - Schedule of Accounts Receivable (Details) - USD ($)
$ in Thousands
Jan. 31, 2018
Oct. 31, 2017
Receivables [Abstract]    
Contract receivable $ 16,153 $ 41,073
Unbilled contracts receivable [1] 22,153 18,162
Commercial customers accounts receivable 38,306 59,235
Advanced Technologies including U.S. government, Amount billed receivable 574 1,934
Advanced Technologies including U.S. government, Unbilled recoverable costs receivable 5,201 7,352
Advanced Technologies including U.S. government, Accounts receivable [2] 5,775 9,286
Accounts receivable, net $ 44,081 $ 68,521
[1] Additional long-term unbilled recoverable costs of $10.6 million and $12.8 million are included within “Other assets” as of January 31, 2018 and October 31, 2017, respectively.
[2] Total U.S. government accounts receivable outstanding as of January 31, 2018 and October 31, 2017 were $3.3 million and $3.2 million, respectively.