Accounts Receivable (Tables)

6 Months Ended

Apr. 30, 2016

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable as of April 30, 2016 and October 31, 2015 consisted of the following:

	April 30, 2016		October 31, 2015
Commercial Customers:
Amount billed	$	8,907	$	19,331
Unbilled recoverable costs	30,790		37,949
	39,697		57,280
Advanced Technology (including U.S. Government(1)):
Amount billed	670		433
Unbilled recoverable costs	3,322		3,077
	3,992		3,510
Accounts receivable, net	$	43,689	$	60,790

(1) Total U.S. Government accounts receivable outstanding as of April 30, 2016 and October 31, 2015 was $3.0 million and $2.6 million, respectively.