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Accounts Receivable, Net and Unbilled Receivables - Schedule of Accounts Receivable, Net and Unbilled Receivables (Details) - USD ($)
$ in Thousands
Apr. 30, 2019
Oct. 31, 2018
Receivables [Abstract]    
Contract receivable $ 10,626 $ 7,415
Unbilled contracts receivables [1] 10,114 10,632
Commercial customers accounts receivable 20,740 18,047
Advanced Technologies including U.S. government, Amount billed receivable 1,216 1,865
Advanced Technologies including U.S. government, Unbilled receivables 964 3,127
Advanced Technologies including U.S. government, Accounts receivable [2] 2,180 4,992
Accounts receivable, net and unbilled receivables $ 22,920 $ 23,039
[1] Additional long-term unbilled receivables of $14.4 million and $9.4 million are included within “Other Assets” as of April 30, 2019 and October 31, 2018, respectively.
[2] Total U.S. government accounts receivable, including unbilled receivables, outstanding as of April 30, 2019 and October 31, 2018 were $0.8 million and $2.3 million, respectively.