Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands		Jul. 31, 2017	Oct. 31, 2016
Receivables [Abstract]
Contract receivable		$ 3,494	$ 5,411
Unbilled contracts receivable	[1]	11,590	13,651
Commercial customers accounts receivable		15,084	19,062
Government contract receivable		2,231	2,463
Government contract receivable, unbilled amounts		9,001	3,068
U.S. government accounts receivable total	[2]	11,232	5,531
Accounts receivable, net		$ 26,316	$ 24,593

[1] Additional unbilled recoverable costs of $13.0 million and $5.7 million are included within “Other assets” as of July 31, 2017 and October 31, 2016, respectively.

[2] Total U.S. Government accounts receivable outstanding as of July 31, 2017 and October 31, 2016 were $3.7 million and $2.2 million, respectively.