Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 29, 2018	[1]
Current assets:
Cash and cash equivalents	$ 12,948	$ 21,194
Accounts receivable, net of allowance for doubtful accounts of $188 as of September 28, 2019 and $213 as of December 29, 2018	8,784	9,083
Inventories	8,896	8,794
Prepaid expenses and other current assets	590	547
Total current assets	31,218	39,618
Property and equipment, net	876	1,220
Intangible assets, net	88	100
Goodwill	533	533
Operating lease right-of-use assets, net	3,056
Other long-term assets	187	201
Total assets	35,958	41,672
Current liabilities:
Accounts payable	2,429	2,516
Accrued compensation	1,944	2,962
Accrued expenses	1,634	2,763
Accrued warranty	376	622
Deferred revenue	1,528	1,639
Operating lease liabilities	1,388
Total current liabilities	9,299	10,502
Long-term liabilities:
Accrued warranty	137	238
Deferred revenue	366	586
Operating lease liabilities	2,151
Other long-term liabilities	17	385
Total liabilities	11,970	11,711
Commitments and contingencies (Note 6)
Stockholders’ equity:
Preferred stock, $0.01 par value, 2,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.01 par value: Authorized: 30,000,000 shares; Issued and outstanding 13,746,959 and 13,602,052 shares as of June 29, 2019 and December 29, 2018, respectively	147	145
Additional paid-in capital	72,793	71,548
Accumulated other comprehensive income	102	70
Accumulated deficit	(49,054)	(41,802)
Total stockholders’ equity	23,988	29,961
Total liabilities and stockholders’ equity	$ 35,958	$ 41,672

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended December 29, 2018.