Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Tax Examination [Line Items]
Income tax benefit	$ (75)	$ (1,547)	$ (150)	$ (1,934)
Effective income tax rate reconciliation	0.50%	6.70%	0.20%	4.50%
S1 Holdco, LLC
Income Tax Examination [Line Items]
TRA payment including interest amount	$ 0	$ 0	$ 0	$ 0

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details