Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 13,042	$ 13,444	[1]
Accounts receivable, net of allowance for doubtful accounts of $186 as of September 27, 2014 and $207 as of December 28, 2013	7,578	7,345	[1]
Inventories	9,604	10,605	[1]
Prepaid expenses and other current assets	548	576	[1]
Total current assets	30,772	31,970	[1]
Property and equipment, net	748	543	[1]
Intangible assets, net	288	328	[1]
Goodwill	533	533	[1]
Other long-term assets	238	303	[1]
Total assets	32,579	33,677	[1]
Current liabilities:
Accounts payable	1,842	2,278	[1]
Accrued compensation	1,502	1,891	[1]
Accrued expenses	1,456	1,592	[1]
Accrued warranty	538	468	[1]
Deferred revenue	1,175	1,133	[1]
Total current liabilities	6,513	7,362	[1]
Long-term liabilities:
Other long-term liabilities	445	461	[1]
Total liabilities	6,958	7,823	[1]
Stockholders’ equity:
Common stock, $0.01 par value: Authorized: 30, 000, 000 shares: Issued and outstanding 9,839,959 and 9,899,483 shares as of September 27, 2014 and as of December 28, 2013, respectively	107	104	[1]
Additional paid-in capital	39,161	40,671	[1]
Accumulated deficit	(13,647)	(14,921)	[1]
Total stockholders’ equity	25,621	25,854	[1]
Total liabilities and stockholders’ equity	$ 32,579	$ 33,677	[1]

[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 28, 2013.