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Discontinued operations - Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Apr. 17, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Discontinued Operations [Line Items] |  |  |
Total current assets, discontinued operations | $ 0 |  | $ 15,369
Total current liabilities, discontinued operations | $ 0 |  | 12,796
Discontinued Operations, Disposed of by Sale | Global Cooling |  |  |
Discontinued Operations [Line Items] |  |  |
Cash and cash equivalents |  | $ 275 | 2,090
Accounts receivable, net |  | 2,430 | 1,728
Inventories |  | 9,152 | 11,248
Prepaid expenses and other current assets |  | 379 | 303
Total current assets, discontinued operations |  | 12,236 | 15,369
Property and equipment, net |  | 153 | 146
Long-term deposits and other assets |  | 4 | 4
Total assets, discontinued operations |  | 12,393 | 15,519
Accounts payable |  | 1,425 | 3,367
Accrued expenses and other current liabilities |  | 911 | 1,637
Warranty liability |  | 7,193 | 7,507
Lease liabilities, operating, current portion |  | 242 | 263
Lease liabilities, financing, current portion |  | 16 | 22
Total current liabilities, discontinued operations |  | 9,787 | 12,796
Lease liabilities, operating, long-term |  | 948 | 1,016
Lease liabilities, financing, long-term |  | 8 | 11
Total liabilities, discontinued operations |  | $ 10,743 | $ 13,823

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