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CONDENSED CONSOLIDATED SATEMENTS OF CASH FLOWS $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($)
Cash flows from operating activities: |  |
Net income | $ 254 | $ 20
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 131 | 145
Unrealized (gains) losses on marketable securities | (381) | 0
Stock-based compensation | 0 | 5
Gain on forgiveness of PPP loan | 0 | (186)
Adjustment to reconcile operating lease expense to cash paid | (5) | (9)
Loss on disposal of property and equipment | 0 | 14
Deferred taxes | 0 | 1
Changes in operating assets and liabilities: |  |
Accounts receivable | 361 | (60)
Inventories | (226) | (7)
Prepaid expenses and other assets | (56) | 225
Accounts payable | 74 | 127
Accrued liabilities | (210) | (50)
Accrued income taxes | 86 | 9
Net cash provided by operating activities | 28 | 234
Cash flows from investing activities: |  |
Purchases of marketable securities | (6,027) | 0
Purchases of property, plant and equipment | (9) | (142)
Net cash used in investing activities | (6,036) | (142)
Cash flows from financing activities: |  |
Payment of dividends on preferred stock | (200) | 0
Net cash used in financing activities | (200) | 0
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (167) | 33
Net (decrease) increase in cash and cash equivalents | (6,375) | 125
Cash, cash equivalents and restricted cash, beginning of period | 10,782 | 6,125
Cash, cash equivalents and restricted cash, end of period | 4,407 | 6,250
Reconciliation of cash, cash equivalents and restricted cash, end of period: |  |
Cash and cash equivalents, end of period | 4,402 | 6,245
Restricted cash, end of period | 5 | 5
Cash, cash equivalents and restricted cash, end of period | 4,407 | 6,250
Supplemental disclosure of cash flow information: |  |
Income taxes paid (refunded), net | 160 | (67)
Interest paid | 0 | 0
Supplemental disclosure of non-cash investing and financing activities: |  |
Lease liabilities arising from obtaining right-of-use assets | $ 178 | $ 50

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