Fair value measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair value measurements

Assets and liabilities measured at fair value on a recurring basis

Assets and liabilities measured at fair value on a recurring basis as of March 31, 2023 and December 31, 2022 are as follows:

			Quoted Prices		Significant
			in Active		Other		Significant
			Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
Assets	Total		(Level 1)		(Level 2)		(Level 3)
March 31, 2023	(in thousands)
Money market funds included in cash and cash equivalents	$	260,725	$	260,725	$	—	$	—
Marketable securities - U.S. Treasury notes		4,993		4,993		—		—
Total money market funds and marketable securities	$	265,718	$	265,718	$	—	$	—
December 31, 2022
Money market funds included in cash and cash equivalents	$	91,724	$	91,724	$	—	$	—
Marketable securities - U.S. Treasury notes		19,889		19,889		—		—
Total money market funds and marketable securities	$	111,613	$	111,613	$	—	$	—