Earnings Per Share - Computation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Dec. 27, 2020	Dec. 29, 2019
Earnings Per Share [Abstract]
Net income	$ 7,464	$ 409	$ 10,896	$ 4,121
Basic weighted average shares	18,465	18,499	18,456	18,490
Net potential common share equivalents	267	273	273	255
Diluted weighted average shares	18,732	18,772	18,729	18,745
Excluded from the calculation of common share equivalents:
Anti-dilutive common share equivalents (in shares)	706	362	747	373
Unvested stock options that vest upon achievement of certain market conditions (in shares)	333		333