Note 13 - Stock Based Compensation - Stock Options Outstanding (Details)	12 Months Ended
	Jul. 01, 2018 $ / shares shares
Options outstanding (in shares) | shares	1,968,234
Options outstanding, weighted-average remaining contractual life (Year)	2 years 328 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 2.35
Options exercisable (in shares) | shares	1,580,234
Options exercisable, weighted-average exercise price (in dollars per share)	$ 2.29
Exercise Price Range 1 [Member]
Options outstanding (in shares) | shares	895,000
Options outstanding, weighted-average remaining contractual life (Year)	2 years 109 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 1.79
Options exercisable (in shares) | shares	770,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 1.79
Exercise Price Range 2 [Member]
Options outstanding (in shares) | shares	32,000
Options outstanding, weighted-average remaining contractual life (Year)	1 year 182 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 2.43
Options exercisable (in shares) | shares	32,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 2.43
Exercise price range, lower range limit (in dollars per share)	2.22
Exercise price range, upper range limit (in dollars per share)	$ 2.44
Exercise Price Range 3 [Member]
Options outstanding (in shares) | shares	1,000,000
Options outstanding, weighted-average remaining contractual life (Year)	3 years 109 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 2.63
Options exercisable (in shares) | shares	750,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 2.63
Exercise Price Range 4 [Member]
Options outstanding (in shares) | shares	41,234
Options outstanding, weighted-average remaining contractual life (Year)	4 years 255 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 7.63
Options exercisable (in shares) | shares	28,234
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.94
Exercise price range, lower range limit (in dollars per share)	3.26
Exercise price range, upper range limit (in dollars per share)	$ 10.20