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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities |  |  |
Net loss | $ (66,427) | $ (139,805) | $ (8,908)
Adjustments to reconcile net loss to net cash used in operating activities |  |  |
Impairment of intangible assets | 5,758 | 110,364 | 0
Impairment of long-lived assets | 9,727 | 0 | 0
Gain on settlement of Global Cooling escrow | (5,115) | 0 | 0
Depreciation | 7,114 | 6,775 | 4,663
Amortization of intangible assets | 5,181 | 9,697 | 8,202
Amortization of loan costs | 13 | 18 | 121
Stock-based compensation | 31,670 | 25,334 | 13,956
Non-cash lease expense | 404 | 3,486 | 2,053
Deferred income tax benefit | (62) | (5,238) | (20,127)
Change in fair value of contingent consideration | (2,193) | (4,754) | 2,875
Change in fair value of warrant liability | 0 | 0 | 121
Change in fair value of investments | 0 | (697) | 0
Accretion of investments | (1,262) | (447) | 0
Gain on acquisition of Sexton Biotechnologies, Inc. | 0 | 0 | (6,451)
Loss on disposal of assets held for rent, net | 594 | 773 | 609
Loss on disposal of property and equipment, net | 633 | 745 | 482
Forgiveness of loans payable | 0 | 0 | (284)
Other | 0 | 166 | 353
Change in operating assets and liabilities, net of effects of acquisitions |  |  |
Accounts receivable, trade, net | 15,351 | (10,753) | (10,132)
Inventories | (8,552) | (6,559) | 114
Prepaid expenses and other current assets | 137 | 26 | 2,663
Accounts payable | (8,425) | 414 | 2,018
Accrued expenses and other current liabilities | 2,002 | 1,787 | (3,936)
Sales taxes payable | 1,311 | 1,526 | 1,412
Warranty liability | (454) | (1,086) | 5,833
Other | 97 | (260) | (230)
Net cash used in operating activities | (12,498) | (8,488) | (4,593)
Cash flows from investing activities |  |  |
Cash acquired in acquisition of Global Cooling, Inc. and Sexton Biotechnologies, Inc. | 0 | 0 | 1,559
Purchases of property and equipment | (6,381) | (10,385) | (8,385)
Purchases of assets held for rent | (4,856) | (3,536) | (6,371)
Proceeds from sale of equipment | 0 | 0 | 5
Proceeds from sale of available-for-sale securities | 3,469 | 420 | 0
Maturities of available-for-sale securities | 52,700 | 8,500 | 0
Investment in available-for-sale securities | (27,095) | (53,116) | 0
Net cash provided by (used in) investing activities | 17,837 | (58,117) | (13,192)
Cash flows from financing activities |  |  |
Proceeds from term loan | 0 | 20,000 | 0
Payments on term loan | (300) | (1,666) | 0
Payments on equipment loans | (198) | (498) | (214)
Proceeds from equipment loans | 0 | 0 | 1,550
Issuance of common stock | 10,244 | 0 | 0
Fees paid related to issuance of common stock | 0 | (131) | (145)
Proceeds from line of credit | 0 | 0 | 27,306
Payments on line of credit | 0 | 0 | (31,536)
Proceeds from exercise of common stock options | 507 | 323 | 1,418
Proceeds from financed insurance premium | 2,639 | 0 | 0
Payments on financed insurance premium | (2,365) | (1,375) | (1,033)
Other | 64 | (337) | (124)
Net cash provided by (used in) financing activities | 10,591 | 16,316 | (2,778)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 15,930 | (50,289) | (20,563)
Cash, cash equivalents, and restricted cash – beginning of period | 19,473 | 69,870 | 90,456
Effects of currency translation on cash, cash equivalents, and restricted cash | 35 | (108) | (23)
Cash, cash equivalents, and restricted cash – end of period | 35,438 | 19,473 | 69,870
Non-cash investing and financing activities |  |  |
Cashless exercise of warrants reclassified from warrant liability to common stock | 0 | 0 | 2,901
Assets acquired under operating leases | 880 | 243 | 6,875
Assets acquired under finance leases | 1,682 | 0 | 440
Purchase of property and equipment not yet paid | 359 | 478 | 197
Unrealized (gain) loss on available-for-sale securities | (56) | 50 | 0
Unrealized gain on currency translation | (12) | 0 | 0
Returned shares from settlement of Global Cooling escrow | (5,115) | 0 | 0
Cash interest paid | 1,927 | 586 | 452
Global Cooling, Inc. and Sexton Biotechnologies |  |  |
Non-cash investing and financing activities |  |  |
Stock issued as consideration | 0 | 0 | 264,718
SciSafe |  |  |
Non-cash investing and financing activities |  |  |
Stock issued as consideration | $ 2,263 | $ 817 | $ 0

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