Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Total	Preferred Stock	Common Stock	Capital in Excess of Par	Accumulated Other Comprehensive Loss	Accumulated Deficit	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2022			12,171,512				1,471,406
Beginning balance at Dec. 31, 2022	$ 36,169,432	$ 0	$ 121,715	$ 74,519,590	$ (15,958,428)	$ (16,945,964)	$ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	636,178			636,178
Net income (loss)	(9,114,298)					(9,114,298)
Change in unrealized losses on available-for-sale securities, net of tax	(1,161,051)				(1,161,051)
Vesting of restricted stock awards (in shares)			56,977
Vesting of restricted stock awards	0		$ 569	(569)
Shares deducted from restricted stock awards for payment of withholding taxes (in shares)			(927)
Shares deducted from restricted stock awards for payment of withholding taxes	$ (1,400)		$ (9)	(1,391)
Exercise of stock options (in shares)	0
Ending balance (in shares) at Sep. 30, 2023			12,227,562				1,471,406
Ending balance at Sep. 30, 2023	$ 26,528,861	0	$ 122,275	75,153,808	(17,119,479)	(26,060,262)	$ (5,567,481)
Beginning balance (in shares) at Jun. 30, 2023			12,227,562				1,471,406
Beginning balance at Jun. 30, 2023	32,085,216	0	$ 122,275	74,946,685	(14,893,572)	(22,522,691)	$ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	207,123			207,123
Net income (loss)	(3,537,571)					(3,537,571)
Change in unrealized losses on available-for-sale securities, net of tax	$ (2,225,907)				(2,225,907)
Exercise of stock options (in shares)	0
Ending balance (in shares) at Sep. 30, 2023			12,227,562				1,471,406
Ending balance at Sep. 30, 2023	$ 26,528,861	0	$ 122,275	75,153,808	(17,119,479)	(26,060,262)	$ (5,567,481)
Beginning balance (in shares) at Dec. 31, 2023			12,248,313				1,471,406
Beginning balance at Dec. 31, 2023	34,504,139	0	$ 122,483	75,338,010	(12,274,563)	(23,114,310)	$ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	906,375			906,375
Net income (loss)	12,919,761					12,919,761
Vesting of restricted stock awards (in shares)			446,044
Vesting of restricted stock awards	0		$ 4,460	(4,460)
Shares deducted from restricted stock awards for payment of withholding taxes (in shares)			(109,633)
Shares deducted from restricted stock awards for payment of withholding taxes	$ (961,091)		$ (1,096)	(959,995)
Exercise of stock options (in shares)	12,731		37,959				35,248
Exercise of stock options	$ 0		$ 380	(28)			$ (352)
Exercise of warrants (in shares)			60,557
Exercise of warrants	0		$ 606	(606)
Issuance of common stock, net of offering (in shares)			1,135,710
Issuance of common stock, net of offering costs	9,066,098		$ 11,357	9,054,741
Change in unrealized gains on available-for-sale securities, net of tax	3,234,450				3,234,450
Ending balance (in shares) at Sep. 30, 2024			13,818,950				1,506,654
Ending balance at Sep. 30, 2024	59,669,732	0	$ 138,190	84,334,037	(9,040,113)	(10,194,549)	$ (5,567,833)
Beginning balance (in shares) at Jun. 30, 2024			12,536,129				1,471,406
Beginning balance at Jun. 30, 2024	40,802,774	0	$ 125,361	76,042,147	(12,624,559)	(17,172,694)	$ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	359,170			359,170
Net income (loss)	6,978,145					6,978,145
Vesting of restricted stock awards (in shares)			211,391
Vesting of restricted stock awards	0		$ 2,114	(2,114)
Shares deducted from restricted stock awards for payment of withholding taxes (in shares)			(106,687)
Shares deducted from restricted stock awards for payment of withholding taxes	$ (952,711)		$ (1,067)	(951,644)
Exercise of stock options (in shares)	12,731		37,959				35,248
Exercise of stock options	$ 0		$ 380	(28)			$ (352)
Exercise of warrants (in shares)			60,557
Exercise of warrants	0		$ 606	(606)
Issuance of common stock, net of offering (in shares)			1,079,601
Issuance of common stock, net of offering costs	8,897,908		$ 10,796	8,887,112
Change in unrealized gains on available-for-sale securities, net of tax	3,584,446				3,584,446
Ending balance (in shares) at Sep. 30, 2024			13,818,950				1,506,654
Ending balance at Sep. 30, 2024	$ 59,669,732	$ 0	$ 138,190	$ 84,334,037	$ (9,040,113)	$ (10,194,549)	$ (5,567,833)