CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2016	Jan. 02, 2016
Statement Of Financial Position [Abstract]
Common stock, par value
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	37,539,000	37,600,000
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0