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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
OPERATING ACTIVITIES: |  |
Net income (loss) | $ (217) | $ 657
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities: |  |
Depreciation and amortization | 523 | 435
Stock-based compensation expense | 79 | 43
Non-cash interest income, net | (10) | (16)
Non-cash investment write-down | 17 |
Equity in (income) loss of affiliate company | 12 | (2)
Changes in operating assets and liabilities: |  |
Accounts receivable, net | (534) | (277)
Inventories, net | (58) | 9
Other current assets | (56) | 120
Accounts payable | (169) | 141
Accrued payroll | 59 | (90)
Deferred revenue | 11 | (717)
Accrued expenses | 42 | 29
Other current liabilities | 10 | 62
Other long term liabilities | 6 | 3
Net cash provided by (used for) operating activities | (285) | 397
INVESTING ACTIVITIES: |  |
Purchase of marketable securities | (42) | (222)
Proceeds from note and interest receivable | 250 | 600
Purchases of property and equipment | (399) | (464)
Patent addition | (20) |
Long-term investment | (300) |
Net cash used by investing activities | (511) | (86)
Effects of exchange rate changes on cash | (9) | (101)
Net increase (decrease) in cash | (805) | 210
Cash at beginning of year | 3,152 | 2,942
Cash at end of year | 2,347 | 3,152
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid for income taxes | $ 26 | $ 70

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