Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016		Apr. 04, 2015
Operating activities:
Net income	$ 101		$ 246
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	142		120
Change in fair value of earn-out liability	11		8
Stock-based compensation	222		333
Provision for doubtful accounts			22
Deferred income taxes			150
Changes in operating assets and liabilities:
Accounts receivable	(15)		295
Inventories	(36)		(735)
Prepaid expenses and other current assets	(39)		(79)
Other long-term assets	16		11
Accounts payable	473		766
Accrued compensation	(289)		(464)
Accrued expenses	(70)		(123)
Accrued warranty	7		42
Deferred revenue			18
Other long-term liabilities	3		7
Net cash provided by operating activities	526		617
Investing activities:
Acquisition of property and equipment	(89)		(397)
Payment on earn-out liability	(96)		(96)
Net cash used in investing activities	(185)		(493)
Financing activities:
Proceeds from stock option exercises	245		487
Repurchase of common stock	(59)		(192)
Taxes paid related to net share settlements of equity awards	(8)		(600)
Net cash provided by (used in) financing activities	178		(305)
Net increase (decrease) in cash and cash equivalents	519		(181)
Cash and cash equivalents, beginning of period	9,995	[1]	13,303
Cash and cash equivalents, end of period	10,514		13,122
Cash paid during the period for:
Income taxes	$ 1		$ 2

[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 2, 2016.