Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share [Abstract]
Net income	$ 30,515	$ 31,270	$ 30,499	$ 16,178	$ 30,111	$ 27,467	$ 92,284	$ 73,756
Denominator for basic net income  per common share—weighted-average shares outstanding	24,699,461			24,457,555			24,595,179	24,308,029
Effect of dilution due to employee stock awards	282,019			343,092			303,456	384,986
Denominator for diluted net income per common share — weighted-average shares outstanding	24,981,480			24,800,647			24,898,635	24,693,015
Basic net income per common share	$ 1.24			$ 0.66			$ 3.75	$ 3.03
Diluted net income per common share	$ 1.22			$ 0.65			$ 3.71	$ 2.99