Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015		Mar. 29, 2014
Operating activities:
Net income	$ 246		$ 487
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	120		108
Change in fair value of earn-out liability	8		99
Stock-based compensation cost recognized	333		244
Provision for doubtful accounts	22		10
Deferred income taxes	150
Changes in operating assets and liabilities:
Accounts receivable	295		603
Inventories	(735)		747
Prepaid expenses and other current assets	(79)		(154)
Other long-term assets	11		15
Accounts payable	766		(508)
Accrued compensation	(464)		(493)
Accrued expenses	(123)		(582)
Accrued warranty	42		16
Deferred revenue	18		(49)
Other long-term liabilities	7		102
Net cash provided by operating activities	617		645
Investing activities:
Acquisition of property and equipment	(397)		(108)
Payment on earn-out liability	(96)		(94)
Net cash used in investing activities	(493)		(202)
Financing activities:
Proceeds from stock option exercises	487		329
Repurchase of common stock	(192)		(247)
Taxes paid related to net share settlements of equity awards	(600)
Net cash (used in) provided by financing activities	(305)		82
Net (decrease) increase in cash and cash equivalents	(181)		525
Cash and cash equivalents, beginning of period	13,303	[1]	13,444
Cash and cash equivalents, end of period	13,122		13,969
Cash paid during the period for:
Income taxes	2		4
Supplemental non-cash financing activities:
Accrual for unsettled repurchases of common stock			$ 99

[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.