CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 28, 2018	Dec. 29, 2017
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 8,748	$ 8,026
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, authorized (in shares)	5,000,000	5,000,000
Preferred Stock, issued (in shares)	0	0
Preferred Stock, outstanding (in shares)	0	0
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, authorized (in shares)	100,000,000	100,000,000
Common Stock, issued (in shares)	29,970,198	28,442,208
Common Stock, outstanding (in shares)	19,970,198	28,442,208