Accounts Receivable (Tables)

3 Months Ended

Jan. 31, 2013

Accounts Receivable [Abstract]

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

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

	January 31, 2013		October 31, 2012
U.S. Government:
Amount billed	$	524	$	20
Unbilled recoverable costs	1,611		890
	2,135		910
Commercial Customers:
Amount billed	9,857		18,786
Unbilled recoverable costs	8,109		6,288
	17,966		25,074
	$	20,101	$	25,984