Discontinued operations - Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Discontinued Operations [Line Items]
Total current assets, discontinued operations	$ 0	$ 4,584
Total current liabilities, discontinued operations	$ 0	616
Discontinued Operations, Disposed of by Sale | SAVSU
Discontinued Operations [Line Items]
Cash and cash equivalents		3,848
Accounts receivable, net		692
Prepaid expenses and other current assets		44
Total current assets, discontinued operations		4,584
Assets held for rent, net		6,103
Property and equipment, net		111
Operating lease right-of-use assets, net		121
Long-term deposits and other assets		5
Intangible assets, net		3,994
Goodwill		3,717
Total assets, discontinued operations		18,635
Accounts payable		213
Accrued expenses and other current liabilities		328
Sales taxes payable		23
Lease liabilities, operating, current portion		52
Total current liabilities, discontinued operations		616
Lease liabilities, operating, long-term		78
Total liabilities, discontinued operations		$ 694