Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jul. 02, 2016	Jan. 02, 2016	Jul. 04, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0	0
Common stock, par value	$ 0.001	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000	50,000,000
Common stock, shares issued	25,628,645	25,421,685	25,375,312
Common stock, shares outstanding	24,939,756	24,732,796	24,686,423