Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jul. 01, 2017	Dec. 31, 2016	[1]
Current assets:
Cash and cash equivalents	$ 24,594	$ 23,747
Accounts receivable, net of allowance for doubtful accounts of $240 as of July 1, 2017 and $230 as of December 31, 2016	7,049	10,025
Inventories	11,388	11,643
Prepaid expenses and other current assets	488	450
Total current assets	43,519	45,865
Property and equipment, net	1,561	1,534
Intangible assets, net	124	132
Goodwill	533	533
Other long-term assets	49	80
Total assets	45,786	48,144
Current liabilities:
Accounts payable	1,781	1,994
Accrued compensation	2,158	2,346
Accrued expenses	1,804	2,135
Accrued warranty	666	603
Deferred revenue	1,345	1,383
Total current liabilities	7,754	8,461
Long-term liabilities:
Other long-term liabilities	442	523
Total liabilities	8,196	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 11,559,444 and 11,304,736 shares as of July 1, 2017 and December 31, 2016, respectively	126	124
Additional paid-in capital	58,202	55,158
Accumulated deficit	(20,738)	(16,122)
Total stockholders’ equity	37,590	39,160
Total liabilities and stockholders’ equity	$ 45,786	$ 48,144

[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 31, 2016.