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. 01, 2022	$ 436,463	$ 23,240	$ (147,738)	$ 1,363	$ 313,328
Balance (in shares) at Jan. 01, 2022	107,360
Share issuance costs					0
Employee stock purchase plan	$ 431				431
Employee stock purchase plan (in shares)	70
Stock incentive plan	$ 2,776	(2,004)			772
Stock incentive plan (in shares)	398
Withholding taxes on stock-based awards		(1,602)			(1,602)
Stock-based compensation		9,691			9,691
Net loss			(5,895)		(5,895)
Dividends on preferred stock			(1,827)		(1,827)
Accretion on preferred stock			(452)		(452)
Balance at Oct. 01, 2022	$ 439,670	29,325	(155,912)	1,363	314,446
Balance (in shares) at Oct. 01, 2022	107,828
Balance at Jul. 02, 2022	$ 438,668	26,254	(143,214)	1,363	323,071
Balance (in shares) at Jul. 02, 2022	107,687
Share issuance costs					0
Employee stock purchase plan	$ 152				152
Employee stock purchase plan (in shares)	17
Stock incentive plan	$ 850	(390)			460
Stock incentive plan (in shares)	124
Withholding taxes on stock-based awards		(631)			(631)
Stock-based compensation		4,092			4,092
Net loss			(11,934)		(11,934)
Dividends on preferred stock			(609)		(609)
Accretion on preferred stock			(155)		(155)
Balance at Oct. 01, 2022	$ 439,670	29,325	(155,912)	1,363	314,446
Balance (in shares) at Oct. 01, 2022	107,828
Balance at Dec. 31, 2022	$ 440,348	33,184	(155,688)	1,363	319,207
Balance (in shares) at Dec. 31, 2022	107,910
Share issuance costs					(191)
Exchange of Series B-1 preferred stock, net of share issuance costs of $123	$ 13,915				13,915
Exchange of Series B-1 preferred stock, net of share issuance costs of $123 (in share)	6,089
Employee stock purchase plan	$ 463				463
Employee stock purchase plan (in shares)	92
Stock incentive plan	$ 7,904	(7,536)			368
Stock incentive plan (in shares)	1,560
Withholding taxes on stock-based awards		(9,121)			(9,121)
Stock-based compensation		8,989			8,989
Net loss			(163,284)		(163,284)
Dividends on preferred stock			(1,123)		(1,123)
Accretion on preferred stock			(429)		(429)
Balance at Sep. 30, 2023	$ 462,630	25,516	(320,524)	1,363	168,985
Balance (in shares) at Sep. 30, 2023	115,651
Balance at Jul. 01, 2023	$ 462,290	22,715	(174,275)	1,363	312,093
Balance (in shares) at Jul. 01, 2023	115,580
Share issuance costs	$ (68)				(68)
Employee stock purchase plan	$ 154				154
Employee stock purchase plan (in shares)	42
Stock incentive plan	$ 254	(153)			101
Stock incentive plan (in shares)	29
Withholding taxes on stock-based awards		(114)			(114)
Stock-based compensation		3,068			3,068
Net loss			(145,823)		(145,823)
Dividends on preferred stock			(305)		(305)
Accretion on preferred stock			(121)		(121)
Balance at Sep. 30, 2023	$ 462,630	$ 25,516	$ (320,524)	$ 1,363	$ 168,985
Balance (in shares) at Sep. 30, 2023	115,651