Stockholder's Equity (Details) - USD ($) $ / shares in Units, $ in Millions					6 Months Ended	9 Months Ended	12 Months Ended
	Apr. 03, 2017	Mar. 13, 2017	Feb. 09, 2017	Feb. 08, 2017	Dec. 29, 2015	Oct. 03, 2017	Jan. 02, 2018	Jan. 03, 2017	Apr. 12, 2017	Jun. 04, 2015
Class of Stock [Line Items]
Shares authorized							181,000,000
Common stock, shares authorized							180,000,000	180,000,000
Common stock, par value							$ 0.01	$ 0.01
Preferred stock, shares authorized							1,000,000	1,000,000
Preferred stock, par value							$ 0.01	$ 0.01
Loss recognized in operations							$ 0.2
Preferred stock, shares issued							0	0
Class A Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount										$ 35.0
Common stock, shares authorized							150,000,000
Common stock, par value							$ 0.01
Treasury shares acquired (in shares)								2,423,871
Treasury Stock, Value, Acquired, Cost Method					$ 35.0
Class B Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares authorized							30,000,000
Common stock, par value							$ 0.01
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized							1,000,000
Preferred stock, par value							$ 0.01
Equity Sponsors [Member] | Minimum
Class of Stock [Line Items]
Registration rights, percentage of common stock shares							10.00%
L Catterton [Member]
Class of Stock [Line Items]
Proceeds from Issuance of Private Placement, Net			$ 16.6
Payments for Repurchase of Private Placement			$ 1.9
L Catterton [Member] | Common Stock [Member] | Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, par value				$ 0.01
Shares Issued upon Conversion (shares)				4,252,873					4,252,873
Sale of Stock, Price Per Share				$ 1,000
L Catterton [Member] | Preferred Stock [Member]
Class of Stock [Line Items]
Proceeds from issuance of private placement				$ 18.5
Preferred stock, shares issued				18,500
Mill Road Capital II, L.P. [Member]
Class of Stock [Line Items]
Proceeds from Issuance of Private Placement, Net	$ 29.1
Payments for Repurchase of Private Placement	$ 2.4
Mill Road Capital II, L.P. [Member] | Class A Common Stock [Member]
Class of Stock [Line Items]
Sale of Stock, Number of Shares Issued in Transaction		8,873,240
Mill Road Capital II, L.P. [Member] | Common Stock [Member] | Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, par value		$ 0.01
Sale of Stock, Price Per Share		$ 3.55
Mill Road Capital II, L.P. [Member] | Preferred Stock [Member]
Class of Stock [Line Items]
Proceeds from issuance of private placement		$ 31.5
Common Stock [Member] | L Catterton [Member] | Warrant [Member]
Class of Stock [Line Items]
Shares to be issued (shares)				1,913,793
Share price (USD per share)				$ 4.35
Fair Value, Inputs, Level 2 | L Catterton [Member]
Class of Stock [Line Items]
Temporary Equity, Accretion of Dividends						$ 8.0
Fair Value Adjustment of Warrants				$ 3.1
Debt Instrument, Convertible, Beneficial Conversion Feature				$ 3.1