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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Cash flows from operating activities: |  |
Net income | $ 243 | $ 60
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 214 | 216
Stock-based compensation | 20 | 26
Operating leases - other | (13) | 11
Gain on forgiveness of PPP loan | (186) | 0
Loss on disposal of property and equipment | 14 | 0
Changes in operating assets and liabilities: |  |
Accounts receivable | 7 | (194)
Inventories | 64 | (36)
Prepaid expenses and other assets | 62 | (169)
Accounts payable | (12) | 14
Accrued liabilities | 100 | 68
Accrued income taxes | 132 | 105
Deferred taxes | (6) | (46)
Deferred revenue | 0 | (13)
Net cash provided by operating activities | 639 | 42
Cash flows from investing activities: |  |
Property, plant and equipment | (142) | 0
Intangible assets | 0 | (66)
Net cash used in investing activities | (142) | (66)
Cash flows from financing activities: |  |
Proceeds from PPP loan | 0 | 186
Net cash provided by financing activities | 0 | 186
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 25 | 49
Net increase in cash and cash equivalents | 522 | 211
Cash, cash equivalents and restricted cash, beginning of period | 6,125 | 5,844
Cash, cash equivalents and restricted cash, end of period | 6,647 | 6,055
Reconciliation of cash, cash equivalents and restricted cash, end of period: |  |
Cash and cash equivalents, end of period | 6,642 | 6,050
Restricted cash, end of period | 5 | 5
Cash, cash equivalents and restricted cash, end of period | 6,647 | 6,055
Supplemental disclosure of cash flow information: |  |
Income taxes paid (refunded), net | (14) | 30
Interest paid | 0 | 0
Supplemental disclosure of non-cash investing and financing activities: |  |
Lease liabilities arising from obtaining right-of-use assets | $ 50 | $ 313

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