Earnings per Share (EPS) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Mar. 29, 2020	Mar. 24, 2019	Mar. 29, 2020	Mar. 24, 2019	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income (loss) available to common stockholders	$ (4,515)	$ (263)	$ (4,264)	$ 77
Interest saved on convertible notes at 4%	16	16	48	47
Adjusted net income (loss)	$ (4,499)	$ (247)	$ (4,216)	$ 124
BASIC [Abstract]
Weighted average common shares (in shares)	15,133,000	15,071,000	15,123,000	15,069,000
Net income per common share (in dollars per share)	$ (0.30)	$ (0.02)	$ (0.28)	$ 0.01
DILUTED [Abstract]
Weighted average common shares (in shares)	15,133,000	15,071,000	15,123,000	15,069,000
Convertible notes (in shares)	0	0	0	833,000
Dilutive stock options (in shares)	0	0	0	0
Weighted average common shares outstanding (in shares)	15,133,000	15,071,000	15,123,000	15,902,000
Net income per common share (in dollars per share)	$ (0.30)	$ (0.02)	$ (0.28)	$ 0.01
Convertible notes	$ 1,542		$ 1,542		$ 1,584
Convertible Senior Notes [Member]
DILUTED [Abstract]
Interest rate	4.00%		4.00%
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Abstract]
Options to purchase shares of common stock excluded from computation of diluted EPS (in shares)	216,550	288,056	216,550	288,056
Stock Options [Member] \| Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Abstract]
Options to purchase shares of common stock exercise price (in dollars per share)	$ 2.71	$ 1.55	$ 2.71	$ 1.55
Stock Options [Member] \| Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings per Share [Abstract]
Options to purchase shares of common stock exercise price (in dollars per share)	$ 13.11	$ 13.11	$ 13.11	$ 13.11

Amount of adjusted net income loss after interest saved on convertible notes.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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