Earnings Per Share (EPS) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Oct. 02, 2020	Sep. 27, 2019
Earnings Per Share [Abstract]
Income from continuing operations	$ 30,342	$ 30,586	$ 61,831	$ 80,174
Income from discontinued operations	0	0	0	5,138
Net income	$ 30,342	$ 30,586	$ 61,831	$ 85,312
Denominator for basic and diluted EPS:
Weighted average shares outstanding, basic (in shares)	32,859	32,660	32,833	32,606
Dilutive effect of share-based awards (in shares)	217	408	274	413
Weighted average shares outstanding - Diluted (in shares)	33,076	33,068	33,107	33,019
Basic earnings per share:
Income from continuing operations (in dollars per share)	$ 0.92	$ 0.94	$ 1.88	$ 2.46
Income from discontinued operations (in dollars per share)	0	0	0	0.16
Basic earnings per share (in dollars per share)	0.92	0.94	1.88	2.62
Diluted earnings per share:
Income from continuing operations (in dollars per share)	0.92	0.92	1.87	2.43
Income from discontinued operations (in dollars per share)	0	0	0	0.16
Diluted earnings per share (in dollars per share)	$ 0.92	$ 0.92	$ 1.87	$ 2.58
Anitdilutive Securities Excluded From Earnings Per Share [Abstract]
Time-vested stock options, RSAs and RSUs (in shares)	145	0	134	29
Performance-vested restricted stock and PRSUs (in shares)	167	50	93	48