Accounts Receivable (Tables)

9 Months Ended

Jul. 31, 2015

Receivables [Abstract]

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

Accounts receivable as of July 31, 2015 and October 31, 2014 consisted of the following:

	July 31, 2015		October 31, 2014
Commercial Customers:
Amount billed	$	16,629	$	8,871
Unbilled recoverable costs	32,541		50,101
	49,170		58,972
Advanced Technology (including U.S. Government(1)):
Amount billed	2,500		2,517
Unbilled recoverable costs	3,645		2,886
	6,145		5,403
Accounts receivable, net	$	55,315	$	64,375

(1) Total U.S. Government accounts receivable outstanding as of July 31, 2015 and October 31, 2014 was $3.6 million and $1.7 million, respectively.