Accounts Receivable (Tables)

3 Months Ended

Jan. 31, 2016

Receivables [Abstract]

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

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

	January 31, 2016		October 31, 2015
Commercial Customers:
Amount billed	$	10,753	$	19,331
Unbilled recoverable costs	30,651		37,949
	41,404		57,280
Advanced Technology (including U.S. Government(1)):
Amount billed	643		433
Unbilled recoverable costs	3,349		3,077
	3,992		3,510
Accounts receivable, net	$	45,396	$	60,790

(1) Total U.S. Government accounts receivable outstanding as of January 31, 2016 and October 31, 2015 was $2.9 million and $2.6 million, respectively.