Investments - Schedule of Amortized Cost, Unrealized Gains and Losses, and Market Value of Investment Securities (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Cost	$ 87,200,244	$ 207,829,040
Unrealized Gains	2,117,476	8,722,554
Unrealized Losses	(342,024)	(10,543,405)
Market Value	88,975,696	206,008,189
Short-Term Investments | Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Cost		2,834,713
Unrealized Gains		17,220
Unrealized Losses		0
Market Value		2,851,933
Short-Term Investments | Certificate of Deposit
Debt Securities, Available-for-sale [Line Items]
Cost		750,000
Unrealized Gains		1,728
Unrealized Losses		0
Market Value		751,728
Short-Term Investments | Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Cost	2,251,999	4,013,735
Unrealized Gains	9,854	0
Unrealized Losses	0	(42,535)
Market Value	2,261,853	3,971,200
Short-Term Investments | Government Securities
Debt Securities, Available-for-sale [Line Items]
Cost		3,981,161
Unrealized Gains		1,114
Unrealized Losses		0
Market Value		3,982,275
Short-Term Investments | Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Cost		3,400,019
Unrealized Gains		472
Unrealized Losses		(13,991)
Market Value		3,386,500
Short-Term Investments | Other
Debt Securities, Available-for-sale [Line Items]
Cost	838,907	1,400,176
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	838,907	1,400,176
Long-Term Investments | Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Cost	29,764,908	41,372,112
Unrealized Gains	1,039,037	620,756
Unrealized Losses	0	(226,764)
Market Value	30,803,945	41,766,104
Long-Term Investments | Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Cost	37,702,921	54,552,964
Unrealized Gains	718,334	355,627
Unrealized Losses	(151,942)	(371,074)
Market Value	38,269,313	54,537,517
Long-Term Investments | Government Securities
Debt Securities, Available-for-sale [Line Items]
Cost		6,206,437
Unrealized Gains		13,124
Unrealized Losses		(20,026)
Market Value		6,199,535
Long-Term Investments | Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Cost	16,641,509	40,542,837
Unrealized Gains	350,251	209,564
Unrealized Losses	(190,082)	(1,294,083)
Market Value	$ 16,801,678	39,458,318
Long-Term Investments | VOXX Common Stock | VOXX Common Stock
Debt Securities, Available-for-sale [Line Items]
Cost		48,774,886
Unrealized Gains		7,502,949
Unrealized Losses		(8,574,932)
Market Value		$ 47,702,903