Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value of Financial Liabilities
Carrying amount of cash and cash equivalents and short term investments	$ 298,390	$ 275,846
Fair value of financial assets and liabilities
Marketable Securities	250,869	215,765
Derivative liability		1,150
Corporate Debt Securities and Commercial Paper
Fair value of financial assets and liabilities
Marketable Securities	201,214	215,765
US Treasury Securities
Fair value of financial assets and liabilities
Marketable Securities	49,655
Recurring | Estimated fair value
Fair value of financial assets and liabilities
Fair value of assets	288,699	261,612
Derivative asset	150
Derivative liability		1,150
Recurring | Derivative on Royalty Financing | Estimated fair value
Fair value of financial assets and liabilities
Derivative liability		1,150
Recurring | Corporate Debt Securities and Commercial Paper | Estimated fair value
Fair value of financial assets and liabilities
Marketable Securities	201,214	215,765
Recurring | Money Market Funds | Estimated fair value
Fair value of financial assets and liabilities
Cash Equivalents	37,680	45,847
Recurring | US Treasury Securities | Estimated fair value
Fair value of financial assets and liabilities
Marketable Securities	49,655
Recurring | Level 1 | Estimated fair value
Fair value of financial assets and liabilities
Fair value of assets	87,335	40,868
Recurring | Level 1 | Money Market Funds | Estimated fair value
Fair value of financial assets and liabilities
Cash Equivalents	37,680	40,868
Recurring | Level 1 | US Treasury Securities | Estimated fair value
Fair value of financial assets and liabilities
Marketable Securities	49,655
Recurring | Level 2 | Estimated fair value
Fair value of financial assets and liabilities
Fair value of assets	201,214	220,744
Recurring | Level 2 | Corporate Debt Securities and Commercial Paper | Estimated fair value
Fair value of financial assets and liabilities
Marketable Securities	201,214	215,765
Recurring | Level 2 | Money Market Funds | Estimated fair value
Fair value of financial assets and liabilities
Cash Equivalents		4,979
Recurring | Level 3 | Estimated fair value
Fair value of financial assets and liabilities
Fair value of assets	150
Derivative asset	$ 150
Derivative liability		1,150
Recurring | Level 3 | Derivative on Royalty Financing | Estimated fair value
Fair value of financial assets and liabilities
Derivative liability		$ 1,150