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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Operating activities:      
Net income $ 1,438 $ 2,610 $ 3,046
Less income from discontinued operations 1,608 469 1,393
(Loss) income from continuing operations, net of tax (170) 2,141 1,653
Adjustments to reconcile net income to net cash (used in) provided by operating activities:      
Depreciation and amortization 427 410 297
Change in fair value of earn-out liability 215 280 0
Stock compensation cost recognized 388 478 488
Tax effect of stock compensation expense 0 2 1
Provision for doubtful accounts 33 (12) 0
Changes in operating assets and liabilities, net of assets and liabilities acquired:      
Accounts receivable 38 (82) (30)
Inventories (1,376) (1,027) (1,522)
Prepaid expenses and other current assets (665) (75) (30)
Other long-term assets (88) 7 104
Accounts payable 525 66 7
Accrued compensation 383 (209) 59
Accrued expenses (756) 285 49
Accrued warranty (103) (51) 40
Deferred revenue (10) 12 (47)
Other long-term liabilities 21 26 67
Net cash (used in) provided by operating activities (1,138) 2,251 1,136
Investing activities:      
Acquisition of property and equipment (394) (203) (193)
Cash paid in business combination 0 (75) (225)
Payment on earn-out liability (328) 0 0
Net cash used in investing activities (722) (278) (418)
Cash flows from financing activities:      
Proceeds from stock option exercises 445 321 88
Repurchase of common stock (2,835) (648) 0
Proceeds from borrowings 0 0 3,938
Repayment of borrowings 0 0 (6,297)
Net cash used in financing activities (2,390) (327) (2,271)
Net cash provided by operating activities from discontinued operations 695 797 2,688
Net cash provided by investing activities from discontinued operations 4,632 0 0
Net cash used in financing activities from discontinued operations 0 0 (1,161)
Effect of foreign exchange rate changes from discontinued operations 35 (1) 7
Net cash provided by discontinued operations 5,362 796 1,534
Net increase (decrease) in cash and cash equivalents 1,112 2,442 (19)
Cash and cash equivalents, beginning of year 10,789 8,347 8,366
Cash and cash equivalents, end of year 11,901 10,789 8,347
Cash paid during the year for:      
Income taxes (145) 522 439
Interest paid 0 1 57
Supplemental disclosure of non-cash activities:      
Share issued at acquisition 0 0 444
Contingent consideration - earn-out liability 0 105 380
Contingent consideration - shares $ 0 $ 0 $ 264