Organization and Summary of Significant Accounting Policies - Narrative (Details)			3 Months Ended							12 Months Ended
	May 10, 2024 tranche	May 24, 2018 tranche shares	Dec. 31, 2024 USD ($) condition	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($) condition	Dec. 31, 2024 USD ($) condition	Dec. 31, 2024 USD ($) condition institution	Dec. 31, 2024 USD ($) condition item	Dec. 31, 2024 USD ($) condition segment	Dec. 31, 2024 USD ($) condition	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Summary Of Significant Accounting Policy [Line Items]
Decrease in revenue				$ (503,236,000)	$ (459,871,000)	$ (430,376,000)	$ (413,278,000)	$ (372,704,000)	$ (344,341,000)		$ (2,082,526,000)					$ (1,560,699,000)	$ (1,187,143,000)
Decrease in net income				(41,473,000)	(133,352,000)	(57,061,000)	(61,309,000)	(11,514,000)	(45,899,000)		(377,034,000)					(175,783,000)	(146,930,000)
Number of depository institutions												2	2
Aggregate balances in depository institution accounts			$ 376,800,000							$ 376,800,000	376,800,000	$ 376,800,000	$ 376,800,000	$ 376,800,000	$ 376,800,000
Number of reportable segments | segment														2
Credit losses											0					0	0
Restricted cash			11,900,000			2,100,000				11,900,000	11,900,000	11,900,000	11,900,000	$ 11,900,000	11,900,000	2,100,000
Restricted cash including prepaid expenses and other assets			$ 11,800,000							$ 11,800,000	$ 11,800,000	$ 11,800,000	$ 11,800,000	$ 11,800,000	$ 11,800,000
Renewal term			5 years							5 years	5 years	5 years	5 years	5 years	5 years
Termination period										1 year
Impairment charges											$ 0					0	5,300,000
Goodwill, impairment loss											0					0	0
Number of primary revenue sources | item													2
Payment due date from date of invoice										30 days
Unbilled accounts receivable			$ 5,600,000							$ 5,600,000	5,600,000	$ 5,600,000	$ 5,600,000	$ 5,600,000	$ 5,600,000
Reserve for expected credit losses			5,609,000			3,966,000				$ 5,609,000	5,609,000	5,609,000	5,609,000	5,609,000	5,609,000	3,966,000	3,630,000	$ 3,349,000
Selling, general and administrative				170,964,000	151,075,000	137,273,000	122,357,000	119,308,000	115,946,000		741,247,000					494,884,000	399,330,000
Warranty period										1 year
Research and development											441,593,000					303,719,000	233,810,000
Cash surrender value of corporate-owned life insurance policies			8,398,000			7,558,000				$ 8,398,000	$ 8,398,000	$ 8,398,000	$ 8,398,000	$ 8,398,000	$ 8,398,000	7,558,000
Revision
Summary Of Significant Accounting Policy [Line Items]
Decrease in revenue				863,000	865,000	1,766,000	323,000	1,901,000	(1,298,000)							2,692,000	2,792,000
Decrease in net income				(676,000)	(134,000)	210,000	(1,912,000)	906,000	(760,000)							(1,556,000)	209,000
Selling, general and administrative				1,537,000	(1,594,000)	167,000	(922,000)	(614,000)	(621,000)							(1,990,000)	$ (2,245,000)
Error Correction, Other
Summary Of Significant Accounting Policy [Line Items]
Decrease in revenue			5,100,000
Decrease in net income			$ 3,700,000
Chief Executive Officer
Summary Of Significant Accounting Policy [Line Items]
Number of award tranches | tranche		12
Service Based Restricted Stock Unit
Summary Of Significant Accounting Policy [Line Items]
Expiration period										10 years
Performance Shares | Chief Executive Officer
Summary Of Significant Accounting Policy [Line Items]
Performance shares authorized (in shares) | shares		6,400,000
Performance Based Restricted Stock Unit
Summary Of Significant Accounting Policy [Line Items]
Expiration period										10 years
eXponential Stock Units | 2024 Employee XSP
Summary Of Significant Accounting Policy [Line Items]
Number of award tranches | tranche	7
Independent vesting conditions | condition			3							3	3	3	3	3	3
Risk-free interest rate, minimum (as percentage)															3.60%
Risk-free interest rate, maximum (as percentage)															4.50%
Expected volatility, minimum (as percentage)															41.00%
Expected volatility, maximum (as percentage)															46.80%
Expected dividend rate															0.00%
Weighted-average expected volatility															41.60%
2027 Notes
Summary Of Significant Accounting Policy [Line Items]
Interest rate (as a percent)			0.50%							0.50%	0.50%	0.50%	0.50%	0.50%	0.50%		0.50%
Advertising
Summary Of Significant Accounting Policy [Line Items]
Selling, general and administrative											$ 4,400,000					1,900,000	$ 2,300,000
Net sales from products
Summary Of Significant Accounting Policy [Line Items]
Decrease in revenue				(292,763,000)	(270,424,000)	(256,439,000)	(255,055,000)	(233,688,000)	(218,820,000)		$ (1,221,292,000)					(964,002,000)	(797,177,000)
Net sales from products | Revision
Summary Of Significant Accounting Policy [Line Items]
Decrease in revenue				$ 2,422,000	$ 1,624,000	$ 1,966,000	$ 1,388,000	$ (214,000)	$ 569,000							$ 3,709,000	$ 4,211,000
Minimum | Performance Based Restricted Stock Unit
Summary Of Significant Accounting Policy [Line Items]
Vesting period										1 year
Minimum | eXponential Stock Units | 2024 Employee XSP
Summary Of Significant Accounting Policy [Line Items]
Expected life of options										8 years
Maximum
Summary Of Significant Accounting Policy [Line Items]
Remaining terms			12 years							12 years	12 years	12 years	12 years	12 years	12 years
Maximum | Performance Based Restricted Stock Unit
Summary Of Significant Accounting Policy [Line Items]
Vesting period										8 years
Maximum | eXponential Stock Units | 2024 Employee XSP
Summary Of Significant Accounting Policy [Line Items]
Expected life of options										8 years 7 months 6 days