Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 29, 2018	Sep. 30, 2017
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable	$ 4,568	$ 6,890
Common Stock, Par or Stated Value Per Share (usd per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (shares)	500,000,000	500,000,000
Common Stock, Shares, Outstanding (shares)	24,299,000	24,631,000