Revenue and related accounts - Narratives (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($) customer	Mar. 31, 2024 customer	Dec. 31, 2024 USD ($) customer
Prepaid expenses
Prepaid expenses | $	$ 1,412,000		$ 1,012,000
Customer concentration risk | Revenue
Product Information [Line Items]
Number of customers	4	3
Customer concentration risk | Revenue | Customer one
Product Information [Line Items]
Concentration risk, percentage	17.00%	47.00%
Customer concentration risk | Revenue | Customer two
Product Information [Line Items]
Concentration risk, percentage	17.00%	13.00%
Customer concentration risk | Revenue | Customer three
Product Information [Line Items]
Concentration risk, percentage	13.00%	11.00%
Customer concentration risk | Revenue | Customer four
Product Information [Line Items]
Concentration risk, percentage	11.00%
Credit Concentration Risk [Member] | Accounts receivable
Product Information [Line Items]
Number of customers	3		3
Credit Concentration Risk [Member] | Accounts receivable | Customer one
Product Information [Line Items]
Concentration risk, percentage	18.00%		22.00%
Credit Concentration Risk [Member] | Accounts receivable | Customer two
Product Information [Line Items]
Concentration risk, percentage	17.00%		18.00%
Credit Concentration Risk [Member] | Accounts receivable | Customer three
Product Information [Line Items]
Concentration risk, percentage	15.00%		13.00%
Credit Concentration Risk [Member] | Accounts receivable | One different customer
Product Information [Line Items]
Number of customers	1
Concentration risk, percentage	12.00%