Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands		3 Months Ended		12 Months Ended
	Jul. 10, 2019	Mar. 27, 2020	Mar. 29, 2019	Dec. 27, 2019
Equity, Class of Treasury Stock [Line Items]
Total cost		$ 1,006,000	$ 1,616,000
Amount available under repurchase plan		5,600,000
Stock repurchase authorized		$ 147,200,000
Shares repurchased for employee net vesting obligations, shares		125	123
Shares repurchased for employee net vesting obligations, value		$ 2,000,000	$ 2,400,000
Dividend declared		$ 0.38
Dividend payment	$ 5,800,000	$ 13,000
Minimum [Member]
Equity, Class of Treasury Stock [Line Items]
Dividend declared				$ 0.34
Maximum [Member]
Equity, Class of Treasury Stock [Line Items]
Dividend declared				$ 0.36
Share Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock		73	101
Purchase price per share		$ 13.79	$ 15.99
Total cost		$ 1,000,000	$ 1,600,000
Stock Appreciation Rights (“SARs”) [Member]
Equity, Class of Treasury Stock [Line Items]
SARs outstanding		2,900
Exercise price		$ 4.00
Expiration date		Feb. 28, 2022