Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Beginning Balance at Jan. 02, 2021	$ 485,134	$ 625	$ 420,202	$ 2,720	$ 79,896	$ (18,309)
Beginning Balance, Shares at Jan. 02, 2021		58,998,711
Vesting of restricted stock, Shares		221,724
Grants of restricted stock		$ 7	(7)
Forfeitures of restricted stock		$ (1)	1
Purchases of treasury stock	(1,159)					(1,159)
Purchases of treasury stock, Shares		(50,266)
Retirement of treasury stock		$ (1)	(969)		(189)	1,159
Issuance of treasury stock, Shares		4,600
Issuance of treasury stock					(20)	20
Stock-based compensation	5,748		5,748
Exercise of stock options, Shares		67,797
Exercise of stock options	138	$ 1	137
Common stock issued under ESPP, Shares		12,024
Common stock issued under ESPP	191		191
Issuance in acquisition of Eco	6,108	$ 4	6,104
Issuance in acquisition of Eco, Shares		357,797
Net income (loss) attributable to the Company	16,712				16,712
Decrease (increase) in value of RNCI	(4,528)				(4,528)
Other comprehensive income (loss), net of tax expense	8,500			8,500
Ending Balance at Oct. 02, 2021	516,844	$ 635	431,407	11,220	91,871	(18,289)
Ending Balance, Shares at Oct. 02, 2021		59,612,387
Beginning Balance at Jul. 03, 2021	521,622	$ 632	429,268	11,330	98,681	(18,289)
Beginning Balance, Shares at Jul. 03, 2021		59,587,128
Vesting of restricted stock, Shares		32,258
Grants of restricted stock		$ 4	(4)
Purchases of treasury stock	(154)					(154)
Purchases of treasury stock, Shares		(7,852)
Retirement of treasury stock		$ (1)	(125)		(28)	154
Stock-based compensation	2,254		2,254
Common stock issued under ESPP, Shares		853
Common stock issued under ESPP	14		14
Net income (loss) attributable to the Company	(5,817)				(5,817)
Decrease (increase) in value of RNCI	(965)				(965)
Other comprehensive income (loss), net of tax expense	(110)			(110)
Ending Balance at Oct. 02, 2021	516,844	$ 635	431,407	11,220	91,871	(18,289)
Ending Balance, Shares at Oct. 02, 2021		59,612,387
Beginning Balance at Jan. 01, 2022	529,097	$ 635	433,347	7,006	106,398	(18,289)
Beginning Balance, Shares at Jan. 01, 2022		59,696,117
Vesting of restricted stock, Shares		359,360
Grants of restricted stock		$ 6	(6)
Forfeitures of restricted stock		$ (1)	1
Purchases of treasury stock	(1,888)					(1,888)
Purchases of treasury stock, Shares		(95,001)
Retirement of treasury stock		$ (1)	(1,498)		(389)	1,888
Stock-based compensation	7,638		7,638
Common stock issued under ESPP, Shares		17,964
Common stock issued under ESPP	291		291
Net income (loss) attributable to the Company	89,371				89,371
Decrease (increase) in value of RNCI	(1,514)				(1,514)
Other comprehensive income (loss), net of tax expense	(9,535)			(9,535)
Ending Balance at Oct. 01, 2022	613,460	$ 639	439,773	(2,529)	193,866	(18,289)
Ending Balance, Shares at Oct. 01, 2022		59,978,440
Beginning Balance at Jul. 02, 2022	580,805	$ 639	437,207	(2,368)	163,616	(18,289)
Beginning Balance, Shares at Jul. 02, 2022		59,946,691
Vesting of restricted stock, Shares		42,258
Purchases of treasury stock	(225)					(225)
Purchases of treasury stock, Shares		(10,509)
Retirement of treasury stock			(163)		(62)	225
Stock-based compensation	2,729		2,729
Net income (loss) attributable to the Company	30,041				30,041
Decrease (increase) in value of RNCI	271				271
Other comprehensive income (loss), net of tax expense	(161)			(161)
Ending Balance at Oct. 01, 2022	$ 613,460	$ 639	$ 439,773	$ (2,529)	$ 193,866	$ (18,289)
Ending Balance, Shares at Oct. 01, 2022		59,978,440