Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common shares [Member]	Additional paid-in Capital [Member]	Accumulated deficit [Member]	Accumulated other comprehensive income [Member]	Total
Balance at Jan. 02, 2021	$ 326,545	$ 37,862	$ (147,741)	$ 1,363	$ 218,029
Balance (in shares) at Jan. 02, 2021	90,194
Exchange of Series A preferred stock, net of share issuance costs of $287	$ 87,188				87,188
Exchange of Series A preferred stock, net of share issuance costs of $287 (in share)	12,633
Employee stock purchase plan	$ 333				333
Employee stock purchase plan (in shares)	28
Stock incentive plans	$ 21,359	(14,502)			6,857
Stock incentive plans (in shares)	4,271
Withholding taxes on stock-based awards		(6,737)			(6,737)
Stock-based compensation		8,343			8,343
Net earnings			754		754
Dividends on preferred stock			(2,260)		(2,260)
Accretion on preferred stock			(437)		(437)
Balance at Jul. 03, 2021	$ 435,425	24,966	(149,684)	1,363	312,070
Balance (in shares) at Jul. 03, 2021	107,126
Balance at Apr. 03, 2021	$ 418,822	33,340	(148,022)	1,363	305,503
Balance (in shares) at Apr. 03, 2021	103,612
Share issuance costs	$ (25)				(25)
Employee stock purchase plan	$ 207				207
Employee stock purchase plan (in shares)	18
Stock incentive plans	$ 16,421	(12,078)			4,343
Stock incentive plans (in shares)	3,496
Withholding taxes on stock-based awards		(666)			(666)
Stock-based compensation		4,370			4,370
Net earnings			(918)		(918)
Dividends on preferred stock			(609)		(609)
Accretion on preferred stock			(135)		(135)
Balance at Jul. 03, 2021	$ 435,425	24,966	(149,684)	1,363	312,070
Balance (in shares) at Jul. 03, 2021	107,126
Balance at Jan. 01, 2022	$ 436,463	23,240	(156,082)	1,363	304,984
Balance (in shares) at Jan. 01, 2022	107,360
Employee stock purchase plan	$ 279				279
Employee stock purchase plan (in shares)	53
Stock incentive plans	$ 1,926	(1,614)			312
Stock incentive plans (in shares)	274
Withholding taxes on stock-based awards		(971)			(971)
Stock-based compensation		5,599			5,599
Net earnings			5,904		5,904
Dividends on preferred stock			(1,218)		(1,218)
Accretion on preferred stock			(297)		(297)
Balance at Jul. 02, 2022	$ 438,668	26,254	(151,693)	1,363	314,592
Balance (in shares) at Jul. 02, 2022	107,687
Balance at Apr. 02, 2022	$ 437,451	24,042	(152,617)	1,363	310,239
Balance (in shares) at Apr. 02, 2022	107,579
Employee stock purchase plan	$ 145				145
Employee stock purchase plan (in shares)	22
Stock incentive plans	$ 1,072	(876)			196
Stock incentive plans (in shares)	86
Withholding taxes on stock-based awards		(882)			(882)
Stock-based compensation		3,970			3,970
Net earnings			1,684		1,684
Dividends on preferred stock			(609)		(609)
Accretion on preferred stock			(151)		(151)
Balance at Jul. 02, 2022	$ 438,668	$ 26,254	$ (151,693)	$ 1,363	$ 314,592
Balance (in shares) at Jul. 02, 2022	107,687