CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jul. 04, 2015	Sep. 30, 2014
Current assets:
Trade receivables, allowances for doubtful accounts	$ 4	$ 40
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, outstanding (in shares)	452,374	460,769
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	20,000,000	8,000,000
Common stock, outstanding (in shares)	3,694,122	3,588,958