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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities: |  |
Net income (loss) | $ (560) | $ 20,556
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |
Depreciation and amortization expense | 941 | 2,970
Amortization of right of use of assets | 397 | 597
Share-based compensation expense | 109 | 113
Change of inventory to net realizable value | 281 | 120
Loss on disposal of assets | (47) | 146
Gain recognized on Paycheck Protection Plan Loan forgiveness | 0 | (1,528)
Gain on legal settlement proceeds, net of capitalized legal costs less amortization | (4,000) | (33,623)
Changes in operating assets and liabilities: |  |
Receivables | 324 | 1,388
Legal settlement receivable | 55,000 | 0
Inventories | (2,381) | 1,812
Prepaid expenses and other assets | 3,752 | 684
Accounts payable | 661 | (4,104)
Accrued liabilities | (497) | 485
Income taxes receivable | 1,035 | 6,466
Deferred product revenue | (33) | 9
Operating lease liabilities | (425) | (623)
Other long-term liabilities | 71 | 353
Net cash provided by (used in) operating activities | 54,628 | (4,179)
Cash flows from investing activities: |  |
Purchase of marketable securities | (10,298) | 0
Purchase of property and equipment | (375) | (51)
Purchase of intangibles | (135) | (137)
Capitalized patent defense costs | 0 | (737)
Proceeds from maturities and sales of marketable securities | 5,925 | 3,010
Net cash provided by (used in) investing activities | (4,883) | 2,085
Cash flows from financing activities: |  |
Dividend payment | (28,979) | 0
Principal payments of long-term debt | (3,920) | (720)
Proceeds from issuance of short-term notes | 0 | 2,000
Proceeds from Paycheck Protection Program loan | 0 | 767
Proceeds from equity-based compensation programs | 7 | 4
Net cash provided by (used in) financing activities | (32,892) | 2,051
Effect of exchange rate changes on cash and cash equivalents | (2) | (44)
Net decrease in cash and cash equivalents | 16,851 | (87)
Cash and cash equivalents at the beginning of the year | 984 | 1,071
Cash and cash equivalents at the end of the year | 17,835 | 984
Supplemental disclosure of cash flow information: |  |
Cash paid for income taxes | 6,905 | 88
Cash paid for interest | 343 | 226
Supplemental disclosure of non-cash investing and financing activities |  |
Right-of-use assets obtained in exchange for lease obligations | 0 | 107
Issue of common stock in consideration of cancellation of debt | $ 0 | $ 2,000

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