Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 21,707	$ 23,747
Accounts receivable, net of allowance for doubtful accounts of $226 as of December 30, 2017 and $230 as of December 31, 2016	7,863	10,025
Inventories	9,381	11,643
Prepaid expenses and other current assets	500	450
Total current assets	39,451	45,865
Property and equipment, net	1,403	1,534
Intangible assets, net	116	132
Goodwill	533	533
Other long-term assets	143	80
Total assets	41,646	48,144
Current liabilities:
Accounts payable	1,724	1,994
Accrued compensation	2,459	2,346
Accrued expenses	2,153	2,135
Accrued warranty	1,536	310
Deferred revenue	2,520	1,383
Total current liabilities	10,392	8,168
Long-term liabilities:
Accrued warranty	199	293
Other long-term liabilities	533	523
Total liabilities	11,124	8,984
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	126	124
Additional paid-in capital	59,385	55,158
Accumulated deficit	(28,989)	(16,122)
Total stockholders’ equity	30,522	39,160
Total liabilities and stockholders’ equity	$ 41,646	$ 48,144