Fair value measurements and investments - Cash Equivalents and Marketable Securities (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	$ 20,002
Gross unrealized gain (loss)	238
Fair value	20,240
U.S. Treasury securities | Short-Term Investments
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	20,002
Gross unrealized gain (loss)	238
Fair value	$ 20,240