Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 01, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 4,257	$ 3,923
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)	16,712,000	16,660,000
Common stock, shares outstanding (in shares)	16,712,000	16,660,000