Accounts Receivable (Tables)

6 Months Ended

Apr. 30, 2014

Receivables [Abstract]

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

Accounts receivable at April 30, 2014 and October 31, 2013 consisted of the following:

	April 30, 2014		October 31, 2013
Advanced Technology (including U.S. Government(1)):
Amount billed	$	1,805	$	786
Unbilled recoverable costs	1,369		639
	3,174		1,425
Commercial Customers:
Amount billed	15,121		17,344
Unbilled recoverable costs	16,440		30,347
	31,561		47,691
Accounts receivable, net	$	34,735	$	49,116

(1) Total U.S. Government accounts receivable outstanding at April 30, 2014 is $0.8 million.