Note 13 - Stock Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jul. 01, 2018
Outstanding, options (in shares)	1,365,000
Outstanding, weighted average exercise price (in dollars per share)	$ 2.48
Granted, options (in shares)	15,000	0	0
Granted, weighted average exercise price (in dollars per share)	$ 20.72
Exercised, options (in shares)	(150,000)
Exercised, weighted average exercise price (in dollars per share)	$ 1.90
Forfeited, oprtions (in shares)
Forfeited, weighted average exercise price (in dollars per share)
Outstanding, options (in shares)	1,230,000	1,365,000
Outstanding, weighted average exercise price (in dollars per share)	$ 2.77	$ 2.48
Outstanding, weighted average remaining contractual term (Year)	1 year 109 days
Outstanding, aggregate intrinsic value	$ 21,043
Exercisable, options (in shares)	1,215,000
Exercisable, weighted average exercise price (in dollars per share)	$ 2.55
Exercisable, weighted average remaining contractual term (Year)	1 year 109 days
Exercisable, aggregate intrinsic value	$ 21,043