Investments (Tables)

3 Months Ended

Mar. 31, 2023

Investments [Abstract]

Schedule of Investment Securities Stated at Fair Value

Assets or liabilities that have recurring fair value measurements are shown below as of March 31, 2023 and December 31, 2022:

As of March 31, 2023:

			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	March 31, 2023		(Level 1)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	215,452,160	$	215,452,160	$	—	$	—
Restricted Cash	4,000,000		4,000,000		—		—
Short-Term Investments:
Certificate of Deposit	1,741,295		1,741,295		—		—
Corporate Bonds	5,495,110		—		5,495,110		—
Government Securities	6,155,223		—		6,155,223		—
Municipal Bonds	3,963,985		—		3,963,985		—
Other	4,474,175		1,007,150		3,467,025		—
Long-Term Investments:
Asset Backed Securities	18,718,258		—		18,718,258		—
Certificate of Deposit	239,107		239,107		—		—
Corporate Bonds	37,242,499		—		37,242,499		—
Government Securities	36,922,649		—		36,922,649		—
Municipal Bonds	50,870,849		—		50,870,849		—
Common Stock	720,910		720,910		—		—
Total	$	385,996,220	$	223,160,622	$	162,835,598	$	—

As of December 31, 2022:

			Fair Value Measurements at Reporting Date Using
	Total as of		Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	December 31, 2022		(Level 1)		(Level 2)		(Level 3)
Cash & Cash Equivalents	$	214,754,638	$	214,754,638	$	—	$	—
Restricted Cash	4,000,000		4,000,000		—		—
Short-Term Investments:
Certificate of Deposit	1,736,163		1,736,163		—		—
Corporate Bonds	5,473,341		—		5,473,341		—
Government Securities	4,423,041		—		4,423,041		—
Municipal Bonds	5,174,773		—		5,174,773		—
Other	2,347,602		1,093,602		1,254,000		—
Long-Term Investments:
Asset-backed Securities	18,829,696		—		18,829,696		—
Certificate of Deposit	238,925		238,925		—		—
Corporate Bonds	36,310,477		—		36,310,477		—
Governmental Securities	36,532,634		—		36,532,634		—
Municipal Bonds	48,430,166		—		48,430,166
Common Stock	293,300		293,300		—		—
Total	$	378,544,756	$	222,116,628	$	156,428,128	$	—

Schedule of Amortized Cost, Unrealized Gains and Losses, And Market Value of Investment Securities

The amortized cost, unrealized gains and losses, and market value of investment securities are shown as of March 31, 2023 and December 31, 2022:

As of March 31, 2023:

			Unrealized
	Cost		Gains		Losses		Market Value
Short-Term Investments:
Certificate of Deposit	$	1,750,000	$	93	$	(8,798)	$	1,741,295
Corporate Bonds	5,542,607		—		(47,497)		5,495,110
Government Securities	6,190,793		2,058		(37,628)		6,155,223
Municipal Bonds	3,998,537		—		(34,552)		3,963,985
Other	4,474,175		—		—		4,474,175
Long-Term Investments:
Asset Backed Securities	18,852,424		—		(134,166)		18,718,258
Certificate of Deposit	250,000		—		(10,893)		239,107
Corporate Bonds	40,819,361		20,678		(3,597,540)		37,242,499
Government Securities	39,525,976		—		(2,603,327)		36,922,649
Municipal Bonds	54,635,848		314,881		(4,079,880)		50,870,849
Common Stock	720,911		—		—		720,911
Total	$	176,760,632	$	337,710	$	(10,554,281)	$	166,544,061

As of December 31, 2022:    

			Unrealized
	Cost		Gains		Losses		Market Value
Short-Term Investments:
Certificate of Deposit	$	1,750,256	$	—	$	(14,093)	$	1,736,163
Corporate Bonds	5,571,417		—		(98,076)		5,473,341
Government Securities	4,476,613		—		(53,572)		4,423,041
Municipal Bonds	5,223,500		—		(48,727)		5,174,773
Other	2,347,602		—		—		2,347,602
Long-Term Investments:
Asset-backed Securities	19,151,229		—		(321,533)		18,829,696
Certificate of Deposit	250,000		—		(11,075)		238,925
Corporate Bonds	40,410,206		—		(4,099,729)		36,310,477
Government Securities	39,637,461		—		(3,104,827)		36,532,634
Municipal Bonds	53,476,883		235,713		(5,282,430)		48,430,166
Common Stock	292,638		662		—		293,300
Total	$	172,587,805	$	236,375	$	(13,034,062)	$	159,790,118

Schedule of Unrealized Loss on Investments

Unrealized losses on investments as of March 31, 2023, are as follows:

	Aggregate Unrealized Losses		Aggregate Fair Value of Investments
Loss duration of less than one year	$	321,165	$	23,213,314
Loss duration of greater than one year	10,233,116		130,046,373
Total	$	10,554,281	$	153,259,687

Unrealized losses on investments as of December 31, 2022, are as follows:

	Aggregate Unrealized Losses		Aggregate Fair Value of Investments
Loss duration of less than one year	$	4,816,103	$	77,701,146
Loss duration of greater than one year	8,217,959		76,643,586
Total	$	13,034,062	$	154,344,732

Schedule of Investments Classified by Contractual Maturity Date

Fixed income securities as of March 31, 2023 have contractual maturities as follows:

Due within one year	$	17,355,612
Due between one and five years	93,840,749
Due over five years	50,152,613
	$	161,348,974