Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 04, 2015		Jun. 28, 2014
Operating activities:
Net (loss) income	$ (406)		$ 784
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	252		203
Change in fair value of earn-out liability	32		191
Stock-based compensation cost recognized	562		478
Provision for doubtful accounts			36
Changes in operating assets and liabilities:
Accounts receivable	1,018		50
Inventories	(1,052)		852
Prepaid expenses and other current assets	(105)		(10)
Other long-term assets	26		44
Accounts payable	302		(270)
Accrued compensation	(393)		(662)
Accrued expenses	52		(239)
Accrued warranty	51		38
Deferred revenue	20		(50)
Other long-term liabilities	26		(22)
Net cash provided by operating activities	385		1,423
Investing activities:
Acquisition of property and equipment	(588)		(344)
Payment on earn-out liability	(236)		(264)
Net cash used in investing activities	(824)		(608)
Financing activities:
Proceeds from stock option exercises	614		849
Repurchase of common stock	(670)		(2,246)
Taxes paid related to net share settlements of equity awards	(605)
Net cash used in financing activities	(661)		(1,397)
Net decrease in cash and cash equivalents	(1,100)		(582)
Cash and cash equivalents, beginning of period	13,303	[1]	13,444
Cash and cash equivalents, end of period	12,203		12,862
Cash paid during the period for:
Income taxes	$ 32		$ 47

[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 January 3, 2015.