Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 01, 2017	Oct. 01, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,801	$ 2,368
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	51,856,000	51,272,000
Common stock, shares outstanding	33,583,000	33,457,000
Treasury stock, shares	18,273,000	17,815,000