Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 28, 2019	Sep. 28, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5,564	$ 5,963
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized (in shares)	64,000,000	64,000,000
Common stock, shares issued (in shares)	19,156,000	19,124,000
Common stock, shares outstanding (in shares)	19,156,000	19,124,000