Accounts Receivable (Tables)

6 Months Ended

Apr. 30, 2015

Receivables [Abstract]

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

Accounts receivable as of April 30, 2015 and October 31, 2014 consisted of the following:

	April 30, 2015		October 31, 2014
Advanced Technology (including U.S. Government(1)):
Amount billed	$	3,411	$	2,517
Unbilled recoverable costs	3,389		2,886
	6,800		5,403
Commercial Customers:
Amount billed	7,814		8,871
Unbilled recoverable costs	28,907		50,101
	36,721		58,972
Accounts receivable, net	$	43,521	$	64,375

(1) Total U.S. Government accounts receivable outstanding as of April 30, 2015 and October 31, 2014 was $3.4 million and $1.7 million, respectively.