Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 21,194	$ 21,707
Accounts receivable, net of allowance for doubtful accounts of $213 as of December 29, 2018 and $226 as of December 30, 2017	9,083	7,863
Inventories	8,794	9,381
Prepaid expenses and other current assets	547	500
Total current assets	39,618	39,451
Property and equipment, net	1,220	1,403
Intangible assets, net	100	116
Goodwill	533	533
Other long-term assets	201	143
Total assets	41,672	41,646
Current liabilities:
Accounts payable	2,516	1,724
Accrued compensation	2,962	2,459
Accrued expenses	2,763	2,153
Accrued warranty	622	1,536
Deferred revenue	2,225	2,520
Total current liabilities	11,088	10,392
Long-term liabilities:
Accrued warranty	238	199
Other long-term liabilities	385	533
Total liabilities	11,711	11,124
Commitments and contingencies (Note 9)
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 11,596,274 and 11,304,736 shares as of December 30, 2017 and December 31, 2016, respectively	145	126
Additional paid-in capital	71,548	59,385
Accumulated other comprehensive income	70
Accumulated deficit	(41,802)	(28,989)
Total stockholders’ equity	29,961	30,522
Total liabilities and stockholders’ equity	$ 41,672	$ 41,646