Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands	Dec. 31, 2016	Oct. 01, 2016
Allowance for doubtful accounts	$ 129,000	$ 140,000
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	2,755,625	2,755,625
Common stock, outstanding (in shares)	2,755,625	2,755,625