CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
ASC 606 cumulative adjustment | ASC 606 [Member]						$ 0	$ (1,622)
Beginning balance at Jun. 24, 2018	$ 222	$ 33,206	$ (2,493)	$ (24,636)	$ 6,299
Beginning balance (in shares) at Jun. 24, 2018	22,167,000			(7,119,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation expense	$ 0	36	382	$ 0	418
Issuance of common stock	$ 0	88	0	$ 0	88
Issuance of common stock (in shares)	41,000			0
Conversion of senior notes, net	$ 0	0	0	$ 4	4
Conversion of senior notes, net (in shares)	0			2,000
Equity issue costs - ATM offering	$ 0	(3)	0	$ 0	(3)
Net income	0	0	(750)	0	(750)
Ending balance at Jun. 30, 2019	$ 222	33,327	(4,483)	$ (24,632)	$ 4,434
Ending balance (in shares) at Jun. 30, 2019	22,208,000			(7,117,000)	15,090,837
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation expense	$ 0	(104)	0	$ 0	$ (104)
Issuance of common stock	$ 3	354	0	$ 0	357
Issuance of common stock (in shares)	342,000			0
Conversion of senior notes, net	$ 0	(31)	0	$ 95	64
Conversion of senior notes, net (in shares)	0			32,000
Equity issue costs - ATM offering	$ 0	(15)	0	$ 0	(15)
Net income	0	0	(4,233)	0	(4,233)
Ending balance at Jun. 28, 2020	$ 225	$ 33,531	$ (8,716)	$ (24,537)	$ 503
Ending balance (in shares) at Jun. 28, 2020	22,550,000			(7,085,000)	15,465,222