Fair Value Measurements - Summary of fair value measurements on a recurring basis and the level of inputs (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Assets:
Cash and cash equivalents		$ 62,508	$ 38,081
Total Assets		436,874	458,346
Liabilities:
Public warrants		14,378	23,004
Short-term Investments [Member]
Assets:
Investments		315,276	319,776
Other Long-term Investments [Member]
Assets:
Investments		59,090	100,489
Cash and money market funds [Member]
Assets:
Cash and cash equivalents	[1]	28,863	25,131
Commercial Paper [Member] | Short-term Investments [Member]
Assets:
Investments		3,989	16,360
Municipal Bonds [Member] | Short-term Investments [Member]
Assets:
Investments			4,947
Corporate Notes And Bonds [Member] | Short-term Investments [Member]
Assets:
Investments		109,165	130,423
Corporate Notes And Bonds [Member] | Other Long-term Investments [Member]
Assets:
Investments		13,597	44,554
US government and agency
Assets:
Cash and cash equivalents		33,645	12,950
US government and agency | Short-term Investments [Member]
Assets:
Investments		202,122	168,046
US government and agency | Other Long-term Investments [Member]
Assets:
Investments		45,493	55,935
Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Cash and cash equivalents		28,863	25,131
Total Assets		28,863	25,131
Liabilities:
Public warrants		14,378	23,004
Quoted Prices in Active Markets (Level 1) [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | Other Long-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | Cash and money market funds [Member]
Assets:
Cash and cash equivalents	[1]	28,863	25,131
Quoted Prices in Active Markets (Level 1) [Member] | Commercial Paper [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | Municipal Bonds [Member] | Short-term Investments [Member]
Assets:
Investments			0
Quoted Prices in Active Markets (Level 1) [Member] | Corporate Notes And Bonds [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | Corporate Notes And Bonds [Member] | Other Long-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | US government and agency
Assets:
Cash and cash equivalents		0	0
Quoted Prices in Active Markets (Level 1) [Member] | US government and agency | Short-term Investments [Member]
Assets:
Investments		0	0
Quoted Prices in Active Markets (Level 1) [Member] | US government and agency | Other Long-term Investments [Member]
Assets:
Investments		0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash and cash equivalents		33,645	12,950
Total Assets		408,011	433,215
Liabilities:
Public warrants		0	0
Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member]
Assets:
Investments		315,276	319,776
Significant Other Observable Inputs (Level 2) [Member] | Other Long-term Investments [Member]
Assets:
Investments		59,090	100,489
Significant Other Observable Inputs (Level 2) [Member] | Cash and money market funds [Member]
Assets:
Cash and cash equivalents	[1]	0	0
Significant Other Observable Inputs (Level 2) [Member] | Commercial Paper [Member] | Short-term Investments [Member]
Assets:
Investments		3,989	16,360
Significant Other Observable Inputs (Level 2) [Member] | Municipal Bonds [Member] | Short-term Investments [Member]
Assets:
Investments			4,947
Significant Other Observable Inputs (Level 2) [Member] | Corporate Notes And Bonds [Member] | Short-term Investments [Member]
Assets:
Investments		109,165	130,423
Significant Other Observable Inputs (Level 2) [Member] | Corporate Notes And Bonds [Member] | Other Long-term Investments [Member]
Assets:
Investments		13,597	44,554
Significant Other Observable Inputs (Level 2) [Member] | US government and agency
Assets:
Cash and cash equivalents		33,645	12,950
Significant Other Observable Inputs (Level 2) [Member] | US government and agency | Short-term Investments [Member]
Assets:
Investments		202,122	168,046
Significant Other Observable Inputs (Level 2) [Member] | US government and agency | Other Long-term Investments [Member]
Assets:
Investments		45,493	55,935
Unobservable Inputs (Level 3) [Member]
Assets:
Cash and cash equivalents		0	0
Total Assets		0	0
Liabilities:
Public warrants		0	0
Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | Other Long-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | Cash and money market funds [Member]
Assets:
Cash and cash equivalents	[1]	0	0
Unobservable Inputs (Level 3) [Member] | Commercial Paper [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | Municipal Bonds [Member] | Short-term Investments [Member]
Assets:
Investments			0
Unobservable Inputs (Level 3) [Member] | Corporate Notes And Bonds [Member] | Short-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | Corporate Notes And Bonds [Member] | Other Long-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | US government and agency
Assets:
Cash and cash equivalents		0	0
Unobservable Inputs (Level 3) [Member] | US government and agency | Short-term Investments [Member]
Assets:
Investments		0	0
Unobservable Inputs (Level 3) [Member] | US government and agency | Other Long-term Investments [Member]
Assets:
Investments		$ 0	$ 0

[1] Includes money market funds associated with the Company’s overnight investment sweep account and cash collateralizing the Company's letter of credit and corporate credit cards.