Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Operating activities:
Net income	$ 2,231	$ 1,438	$ 2,610
Less income from discontinued operations		1,608	469
Income (loss) from continuing operations	2,231	(170)	2,141
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by (used in) operating activities:
Depreciation and amortization	490	427	410
Change in fair value of earn-out liability	355	215	280
Stock-based compensation cost recognized	689	388	478
Tax effect of stock compensation expense			2
Provision for doubtful accounts	61	33	(12)
Changes in operating assets and liabilities, net of assets and liabilities acquired:
Accounts receivable	(1,926)	38	(82)
Inventories	(2,514)	(1,376)	(1,027)
Prepaid expenses and other current assets	553	(665)	(75)
Other long-term assets	(16)	(88)	7
Accounts payable	173	525	66
Accrued compensation	328	383	(209)
Accrued expenses	171	(756)	285
Accrued warranty	15	(103)	(51)
Deferred revenue	129	(10)	12
Other long-term liabilities	28	21	26
Net cash provided (used in) by operating activities	767	(1,138)	2,251
Investing activities:
Acquisition of property and equipment	(380)	(394)	(203)
Cash paid in business combination			(75)
Payment on earn-out liability	(383)	(328)
Net cash used in investing activities	(763)	(722)	(278)
Cash flows from financing activities:
Proceeds from stock option exercises	1,495	445	321
Repurchase of common stock	(426)	(2,835)	(648)
Payment of legal costs in connection with tender offer	(40)
Net cash provided by (used in) financing activities	1,029	(2,390)	(327)
Net cash provided by operating activities from discontinued operations		695	797
Net cash provided by investing activities from discontinued operations	510	4,632
Effect of foreign exchange rate changes from discontinued operations		35	(1)
Net cash provided by discontinued operations	510	5,362	796
Net increase in cash and cash equivalents	1,543	1,112	2,442
Cash and cash equivalents, beginning of year	11,901	10,789	8,347
Cash and cash equivalents, end of year	13,444	11,901	10,789
Cash paid (received) during the year for:
Income taxes	(536)	(145)	522
Interest paid			1
Supplemental disclosure of non-cash activities:
Contingent consideration – earn-out liability			105
Conversion of preferred stock to common stock	$ 5