Fair Value Measurements - Change in Our Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment balance at beginning of period	$ 20,427	$ 16,718	$ 17,354	$ 14,286
Purchase of investments	1,021	100	1,021	350
Reclassification between Level 2 and Level 3 fair value	0		0
Investment balance at end of period	22,754	16,405	22,754	16,405
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	1,303	(707)	5,305	1,345
Embedded Option
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	(553)	148	(1,714)	(50)
Convertible Note
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	556	146	788	474
(Level 1) | Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment balance at beginning of period	13,279	10,199	10,154	8,147
Purchase of investments	0	0	0	0
Reclassification between Level 2 and Level 3 fair value	0		0
Investment balance at end of period	14,351	9,492	14,351	9,492
(Level 1) | Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	1,072	(707)	4,197	1,345
(Level 1) | Embedded Option
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	0	0	0	0
(Level 1) | Convertible Note
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	0	0	0	0
(Level 2) | Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment balance at beginning of period	0		0
Purchase of investments	1,000		1,000
Reclassification between Level 2 and Level 3 fair value	350		350
Investment balance at end of period	1,388		1,388
(Level 2) | Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	38		38
(Level 2) | Embedded Option
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	0		0
(Level 2) | Convertible Note
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	0		0
(Level 3) | Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment balance at beginning of period	7,148	6,519	7,200	6,139
Purchase of investments	21	100	21	350
Reclassification between Level 2 and Level 3 fair value	(350)		(350)
Investment balance at end of period	7,015	6,913	7,015	6,913
(Level 3) | Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	193	0	1,070	0
(Level 3) | Embedded Option
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	(553)	148	(1,714)	(50)
(Level 3) | Convertible Note
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Unrealized gain (loss)	$ 556	$ 146	$ 788	$ 474