Balance sheet parenthetical (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Sep. 29, 2018	Sep. 30, 2017
Statement of Financial Position [Abstract]
Accounts receivable allowances	$ 12,211	$ 14,334
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	5,000	5,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	166,667	166,667
Common Stock, Shares, Issued	103,128	101,672
Common Stock, Shares, Outstanding	67,777	71,664
Treasury Stock, Shares	35,351	30,008