Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Measurements [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

	Assets and Liabilities at Fair Value as of March 31, 2023
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash and cash equivalents	$	26,001	$	—	$	—	$	26,001
Short-term investments	70,761		9,175		—		79,936
Total cash and cash equivalents and investments	$	96,762	$	9,175	$	—	$	105,937

	Assets and Liabilities at Fair Value as of December 31, 2022
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash and cash equivalents	$	46,345	$	—	$	—	$	46,345
Short-term investments	73,680		18,332		—		92,012
Total cash and cash equivalents and investments	$	120,025	$	18,332	$	—	$	138,357