Net Income (Loss) Per Share of Common Stock (Schedule of Earnings Per Share - Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 01, 2021	Dec. 27, 2019	Jan. 01, 2021	Dec. 27, 2019
Numerator:
Net income (loss)	$ 6,641	$ (1,671)	$ 12,577	$ (1,617)
Denominator:
Weighted average shares outstanding, basic (in shares)	5,504	5,427	5,457	5,387
Effect of potentially dilutive equivalent shares (in shares)	206	0	182	0
Weighted average shares outstanding, diluted (in shares)	5,710	5,427	5,639	5,387
Net income (loss) per share of common stock outstanding:
Basic (in dollars per share)	$ 1.21	$ (0.31)	$ 2.30	$ (0.30)
Diluted (in dollars per share)	$ 1.16	$ (0.31)	$ 2.23	$ (0.30)