Organization and Description of Business - Additional Information (Detail) $ / shares in Units, $ in Millions		12 Months Ended
	Aug. 06, 2013 USD ($) $ / shares shares	Jan. 03, 2016 Store
Organization And Description Of Business [Line Items]
Operating stores | Store		217
Number of shares in initial public offering	21,275,000
Shares of common stock sold by company	20,477,215
Shares sold by stockholders	797,785
Common stock issued price per share | $ / shares	$ 18.00
Net proceeds from issuance of stock | $	$ 344.1
Sprouts Farmers Markets, LLC [Member]
Organization And Description Of Business [Line Items]
Conversion of options to purchase shares common stock		The conversion of units and options to purchase units was on an 11 for 1 basis.
Conversion of options to purchase shares common stock, ratio		11