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Accounts Receivable, Net and Unbilled Receivables - Schedule of Accounts Receivable, Net and Unbilled Receivables (Details) - USD ($)
$ in Thousands
Oct. 31, 2019
Oct. 31, 2018
Receivables [Abstract]    
Amount billed $ 2,227 $ 7,415
Unbilled receivables [1] 6,139 10,632
Commercial customers accounts receivable 8,366 18,047
Advanced Technologies including U.S. government, Amount billed [2] 1,065 1,865
Advanced Technologies including U.S. government, Unbilled receivables [2] 1,545 3,127
Advanced Technologies including U.S. government, Accounts receivable [2] 2,610 4,992
Accounts receivable, net and unbilled receivables $ 10,976 $ 23,039
[1] Additional long-term unbilled receivables of $3.6 million and $9.4 million are included within “Other Assets” as of October 31, 2019 and 2018, respectively. The balance decreased because amounts previously recorded in connection with the Bridgeport Fuel Cell Project service agreement were settled in connection with the acquisition of the Bridgeport Fuel Cell Project.
[2] Total U.S. government accounts receivable, including unbilled receivables, outstanding as of October 31, 2019 and 2018 were $1.2 million and $2.3 million, respectively.