Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jul. 31, 2018	May 24, 2018	Dec. 31, 2019	Jan. 01, 2019	Jan. 02, 2018
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
Issuance of common stock, net of transaction expenses			$ 0	$ 22,992	$ 29,110
Loss recognized in operations					$ 200
Class A common stock
Class of Stock [Line Items]
Common stock, shares authorized			150,000,000
Common stock, par value			$ 0.01
Common shares sold (in shares)	2,500,000
Price per share (USD per share)	$ 10.00
Issuance of common stock, net of transaction expenses	$ 23,000
Class B common stock
Class of Stock [Line Items]
Common stock, shares authorized			30,000,000
Common stock, par value		$ 0.01	$ 0.01
Shares converted (in shares)		1,522,098
Preferred stock
Class of Stock [Line Items]
Preferred stock, shares authorized			1,000,000
Preferred stock, par value			$ 0.01
Minimum | Equity Sponsors
Class of Stock [Line Items]
Registration rights, percentage of common stock shares			10.00%