Net Income Per Share - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 26, 2019	Jun. 26, 2019	Apr. 30, 2019	Aug. 02, 2018
Equity, Class of Treasury Stock [Line Items]
Payment for repurchase of shares		$ 18,151
2018 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Authorized amount under share repurchase agreement				$ 20,000
Repurchase of shares	1,303,282	1,558,836
Payment for repurchase of shares	$ 14,900	$ 18,300
2019 Stock Repurchase Plan
Equity, Class of Treasury Stock [Line Items]
Authorized amount under share repurchase agreement			$ 30,000