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Accounts Receivable, Net and Unbilled Receivables - Schedule of Accounts Receivable, Net and Unbilled Receivables (Details) - USD ($) $ in Thousands | Jan. 31, 2019 | Oct. 31, 2018
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Receivables [Abstract] |  |  |
Contract receivable |  | $ 7,809 | $ 7,415
Unbilled contracts receivables | [1] | 11,194 | 10,632
Commercial customers accounts receivable |  | 19,003 | 18,047
Advanced Technologies including U.S. government, Amount billed receivable |  | 512 | 1,865
Advanced Technologies including U.S. government, Unbilled receivables |  | 1,193 | 3,127
Advanced Technologies including U.S. government, Accounts receivable | [2] | 1,705 | 4,992
Accounts receivable, net and unbilled receivables |  | $ 20,708 | $ 23,039
[1] | Additional long-term unbilled receivables of $17.4 million and $9.4 million are included within “Other Assets” as of January 31, 2019 and October 31, 2018, respectively.
[2] | Total U.S. government accounts receivable, including unbilled receivables, outstanding as of January 31, 2019 and October 31, 2018 were $0.8 million and $2.3 million, respectively.

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