Income taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 01, 2021	May 03, 2021
Tax Credit Carryforward [Line Items]
Stock-based compensation, tax benefits	$ 0	$ 0	$ 10,500,000
Operating loss carryforwards	151,900,000
Deferred tax assets, operating loss carryforwards	39,200,000
Deferred tax assets, operating loss carryforwards, not subject to expiration	112,700,000
Capitalized research and development	$ 4,800,000
GCI Acquisition
Tax Credit Carryforward [Line Items]
Deferred tax liability			24,100,000		$ 24,133,000
Income tax benefit			8,000,000
Sexton Acquisition
Tax Credit Carryforward [Line Items]
Deferred tax liability			$ 1,500,000	$ 1,482,000