Consolidated Balance Sheets (Current Period Unaudited (Parentheticals) - $ / shares shares in Thousands	Dec. 29, 2019	Sep. 29, 2019
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authoritzed (in shares)	500	500
Preferred stock, shares issued (in shares)	0	0
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000	120,000
Common stock, shares issued (in shares)	58,136	57,646
Common stock, shares outstanding (in shares)	58,136	57,646
Common Class B [Member]
Common stock, par value (in dollars per share)	$ 2	$ 2
Common stock, shares authorized (in shares)	30,000	30,000
Common stock, shares issued (in shares)	0	0