Net Income Per Share - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 25, 2019	Sep. 25, 2019	Apr. 30, 2019	Aug. 02, 2018
Equity, Class of Treasury Stock [Line Items]
Payment for repurchase of shares		$ 48.3
2018 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Authorized amount under share repurchase agreement				$ 20.0
Repurchase of shares		1,558,836
2019 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Authorized amount under share repurchase agreement			$ 30.0
Repurchase of shares	2,825,896	2,825,896
Payment for repurchase of shares	$ 29.9