Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands		Apr. 30, 2017	Oct. 31, 2016
Receivables [Abstract]
Contract receivable		$ 4,930	$ 5,411
Unbilled contracts receivable	[1]	9,950	13,651
Commercial customers accounts receivable		14,880	19,062
Government contract receivable		671	2,463
Government contract receivable, unbilled amounts		9,285	3,068
U.S. government accounts receivable total	[2]	9,956	5,531
Accounts receivable, net		$ 24,836	$ 24,593

[1] Additional unbilled recoverable costs of $14.2 million and $5.7 million are included within long-term Other Assets as of April 30, 2017 and October 31, 2016, respectively.

[2] Total U.S. Government accounts receivable outstanding as of April 30, 2017 and October 31, 2016 were $3.5 million and $2.2 million, respectively.