Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022
Current assets:
Cash and cash equivalents	$ 13,922	$ 23,852
Accounts receivable, net of allowance for doubtful accounts of $390 as of December 31, 2022 and $268 as of January 1, 2022	6,229	6,610
Receivable from related party	3,539	3,106
Inventories	10,608	7,614
Prepaid expenses and other current assets	1,468	1,071
Total current assets	35,766	42,253
Property and equipment, net	462	428
Intangible assets, net	1,977	2,205
Goodwill	965	965
Operating lease right-of-use assets, net	1,665	2,565
Other long-term assets	1,455	271
Total assets	42,290	48,687
Current liabilities:
Accounts payable	3,858	2,772
Payable to related party	15	627
Accrued compensation	2,448	3,192
Accrued expenses	1,548	1,575
Other current liabilities	968	1,098
Accrued warranty	168	100
Deferred revenue	2,411	2,355
Operating lease liabilities	1,037	927
Total current liabilities	12,453	12,646
Long-term liabilities:
Accrued warranty	106	58
Deferred revenue	11,742	10,930
Operating lease liabilities	732	1,729
Other long-term liabilities	26	25
Total liabilities	25,059	25,388
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, $0.01 par value, 2,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value: Authorized: 30,000,000 shares; Issued and outstanding 15,989,662 and 15,876,171 shares as of December 31, 2022 and January 1, 2022, respectively	169	168
Additional paid-in capital	86,802	85,255
Accumulated other comprehensive (loss) income	(24)	45
Accumulated deficit	(69,716)	(62,169)
Total stockholders’ equity	17,231	23,299
Total liabilities and stockholders’ equity	$ 42,290	$ 48,687