CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Jan. 02, 2021	$ 265,034	$ 1,419	$ 721,247	$ (457,632)
Beginning Balance (shares) at Jan. 02, 2021		141,928,184
Issuance of common stock, net of underwriters' discounts and commissions	470,108	$ 422	469,686
Issuance of common stock, net of underwriters' discounts and commissions (shares)		42,236,000
Non-cash share-based compensation	10,142		10,142
Net income (loss)	9,148			9,148
Ending Balance at Oct. 02, 2021	754,432	$ 1,841	1,201,075	(448,484)
Ending Balance (in shares) at Oct. 02, 2021		184,164,184
Beginning Balance at Jul. 03, 2021	748,080	$ 1,841	1,196,813	(450,574)
Beginning Balance (shares) at Jul. 03, 2021		184,164,184
Non-cash share-based compensation	4,262		4,262
Net income (loss)	2,090			2,090
Ending Balance at Oct. 02, 2021	754,432	$ 1,841	1,201,075	(448,484)
Ending Balance (in shares) at Oct. 02, 2021		184,164,184
Beginning Balance at Jan. 01, 2022	635,816	$ 1,847	1,208,645	(574,676)
Beginning Balance (shares) at Jan. 01, 2022		184,732,268
Employee stock purchase plan	2,278	$ 12	2,266
Employee stock purchase plan (shares)		1,185,972
Non-cash share-based compensation	14,108		14,108
Net income (loss)	(424,255)			(424,255)
Ending Balance at Oct. 01, 2022	227,947	$ 1,859	1,225,019	(998,931)
Ending Balance (in shares) at Oct. 01, 2022		185,918,240
Beginning Balance at Jul. 02, 2022	200,137	$ 1,859	1,221,507	(1,023,229)
Beginning Balance (shares) at Jul. 02, 2022		185,918,240
Non-cash share-based compensation	3,512		3,512
Net income (loss)	24,298			24,298
Ending Balance at Oct. 01, 2022	$ 227,947	$ 1,859	$ 1,225,019	$ (998,931)
Ending Balance (in shares) at Oct. 01, 2022		185,918,240