Shareholders' Equity (Narrative) (Details) - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jul. 01, 2022	Apr. 01, 2022	Jul. 02, 2021	Apr. 02, 2021	Jul. 01, 2022	Jul. 02, 2021	Dec. 31, 2021	Jul. 02, 2022
Equity, Class of Treasury Stock [Line Items]
Total cost		$ 635,000	$ 8,603,000	$ 2,110,000
Amount available under repurchase plan	$ 10,600,000				$ 10,600,000
Stock repurchase authorized	$ 167,200,000				$ 167,200,000
Shares repurchased for employee net vesting obligations, shares	4,000		2,000		130,000	110,000
Shares repurchased for employee net vesting obligations, value	$ 76,000		$ 38,000		$ 2,500,000	$ 1,600,000
Dividend declared		$ 0.44
Dividend payment	$ 3,480,000	$ 3,474,000	$ 3,227,000	$ 3,254,000
Dividends payable, date to be paid, year and month	2022-07	2022-04			2022-07
Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Dividends payable, date declared, year								2022
Dividends payable, date to be paid, year and month								2022-10
Minimum [Member]
Equity, Class of Treasury Stock [Line Items]
Dividend declared							$ 0.38
Maximum [Member]
Equity, Class of Treasury Stock [Line Items]
Dividend declared							$ 0.40
Share Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock	0		489,000		31,000	626,000
Purchase price per share			$ 17.58		$ 20.50	$ 17.11
Total cost			$ 8,600,000		$ 600,000	$ 10,700,000
Stock Appreciation Rights ("SARs") [Member]
Equity, Class of Treasury Stock [Line Items]
SARs outstanding	0				0		2,900,000
Exercise price							$ 4.00