Summary of Significant Accounting and Reporting Policies (Schedule of Amortized Cost, Unrealized Gains and Losses, and Market Value of Investment Securities) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Cost	$ 172,587,805	$ 195,025,034
Unrealized gains	236,375	3,093,114
Unrealized losses	(13,034,062)	(1,818,868)
Market Value	159,790,118	196,299,280
Long-term Investments \| Common Stock
Debt Securities, Available-for-sale [Line Items]
Cost	292,638
Unrealized gains	662
Unrealized losses	0
Market Value	293,300
Certificate of Deposit \| Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	1,750,256	1,500,543
Unrealized gains	0	7,227
Unrealized losses	(14,093)	0
Market Value	1,736,163	1,507,770
Certificate of Deposit \| Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	250,000	2,001,714
Unrealized gains	0	54,996
Unrealized losses	(11,075)	0
Market Value	238,925	2,056,710
Asset-backed Securities \| Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	19,151,229	26,352,630
Unrealized gains	0	34,771
Unrealized losses	(321,533)	(587,888)
Market Value	18,829,696	25,799,513
Corporate Bonds \| Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	5,571,417	1,994,639
Unrealized gains	0	23,801
Unrealized losses	(98,076)	0
Market Value	5,473,341	2,018,440
Corporate Bonds \| Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	40,410,206	40,716,866
Unrealized gains	0	168,416
Unrealized losses	(4,099,729)	(530,353)
Market Value	36,310,477	40,354,929
Government Securities
Debt Securities, Available-for-sale [Line Items]
Cost		48,385,672
Unrealized gains		55,939
Unrealized losses		(497,575)
Market Value		47,944,036
Government Securities \| Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	4,476,613
Unrealized gains	0
Unrealized losses	(53,572)
Market Value	4,423,041
Government Securities \| Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	39,637,461
Unrealized gains	0
Unrealized losses	(3,104,827)
Market Value	36,532,634
Municipal Bonds \| Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	5,223,500
Unrealized gains	0
Unrealized losses	(48,727)
Market Value	5,174,773
Municipal Bonds \| Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	53,476,883	72,175,568
Unrealized gains	235,713	2,747,964
Unrealized losses	(5,282,430)	(203,052)
Market Value	48,430,166	74,720,480
Other \| Short-term Investments
Debt Securities, Available-for-sale [Line Items]
Cost	2,347,602	1,897,402
Unrealized gains	0	0
Unrealized losses	0	0
Market Value	$ 2,347,602	$ 1,897,402

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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