Accounts Receivable (Tables)

6 Months Ended

Apr. 30, 2013

Accounts Receivable [Abstract]

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

Accounts receivable at April 30, 2013 and October 31, 2012 consisted of the following:

	April 30, 2013		October 31, 2012
U.S. Government:
Amount billed	$	372	$	20
Unbilled recoverable costs	1,275		890
	1,647		910
Commercial Customers:
Amount billed	14,607		18,786
Unbilled recoverable costs	13,139		6,288
	27,746		25,074
	$	29,393	$	25,984