Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Beginning balance at Mar. 31, 2022	$ 1,400	$ 116,487	$ 385,426,431	$ (11,240,752)		$ 374,303,566
Beginning balance, shares at Mar. 31, 2022	1,400,000	116,485,747
Employee stock awards		$ 338	1,174,725			1,175,063
Employee stock awards, shares		338,375
Stock grants			47,844			47,844
Preferred stock dividends declared				(638,071)		(638,071)
Dividends accumulated on preferred stock				(136,061)		(136,061)
Net income (loss)				3,253,027		3,253,027
Common stock issued for cashless warrant exercise		$ 99	(99)
Common stock issued for cashless warrant exercise, shares		99,762
Ending balance at Jun. 30, 2022	$ 1,400	$ 116,924	386,648,901	(8,761,857)		378,005,368
Ending balance, shares at Jun. 30, 2022	1,400,000	116,923,884
Beginning balance at Mar. 31, 2022	$ 1,400	$ 116,487	385,426,431	(11,240,752)		374,303,566
Beginning balance, shares at Mar. 31, 2022	1,400,000	116,485,747
Net income (loss)						2,449,520
Ending balance at Sep. 30, 2022	$ 1,400	$ 117,275	387,892,917	(10,348,003)		377,663,589
Ending balance, shares at Sep. 30, 2022	1,400,000	117,274,755
Beginning balance at Jun. 30, 2022	$ 1,400	$ 116,924	386,648,901	(8,761,857)		378,005,368
Beginning balance, shares at Jun. 30, 2022	1,400,000	116,923,884
Employee stock awards		$ 339	1,176,036			1,176,375
Employee stock awards, shares		338,750
Stock grants			43,750			43,750
Preferred stock dividends declared				(646,595)		(646,595)
Dividends accumulated on preferred stock				(136,044)		(136,044)
Net income (loss)				(803,507)		(803,507)
Common stock issued for cashless warrant exercise		$ 12	24,230			24,242
Common stock issued for cashless warrant exercise, shares		12,121
Ending balance at Sep. 30, 2022	$ 1,400	$ 117,275	387,892,917	(10,348,003)		377,663,589
Ending balance, shares at Sep. 30, 2022	1,400,000	117,274,755
Beginning balance at Mar. 31, 2023	$ 1,400	$ 118,294	391,940,374	(18,941,825)	(522,158)	372,596,085
Beginning balance, shares at Mar. 31, 2023	1,400,000	118,294,478
Employee stock awards		$ 391	822,406			822,797
Employee stock awards, shares		390,111
Stock grants			50,750			50,750
Preferred stock dividends declared				(638,038)		(638,038)
Dividends accumulated on preferred stock				(136,094)		(136,094)
Net income (loss)				(1,093,033)		(1,093,033)
Treasury shares purchased		$ (739)			(1,456,005)	(1,456,744)
Treasury shares purchased, shares		(738,831)
Ending balance at Jun. 30, 2023	$ 1,400	$ 117,946	392,813,530	(20,808,990)	(1,978,163)	370,145,723
Ending balance, shares at Jun. 30, 2023	1,400,000	117,945,758
Beginning balance at Mar. 31, 2023	$ 1,400	$ 118,294	391,940,374	(18,941,825)	(522,158)	372,596,085
Beginning balance, shares at Mar. 31, 2023	1,400,000	118,294,478
Net income (loss)						(8,588,330)
Ending balance at Sep. 30, 2023	$ 1,400	$ 118,461	394,331,516	(29,086,926)	(2,376,790)	362,987,661
Ending balance, shares at Sep. 30, 2023	1,400,000	118,460,743
Beginning balance at Jun. 30, 2023	$ 1,400	$ 117,946	392,813,530	(20,808,990)	(1,978,163)	370,145,723
Beginning balance, shares at Jun. 30, 2023	1,400,000	117,945,758
Employee stock awards		$ 713	1,467,236			1,467,949
Employee stock awards, shares		712,783
Stock grants			50,750			50,750
Preferred stock dividends declared				(646,545)		(646,545)
Dividends accumulated on preferred stock				(136,094)		(136,094)
Net income (loss)				(7,495,297)		(7,495,297)
Treasury shares purchased		$ (198)			(398,627)	(398,825)
Treasury shares purchased, shares		(197,798)
Ending balance at Sep. 30, 2023	$ 1,400	$ 118,461	$ 394,331,516	$ (29,086,926)	$ (2,376,790)	$ 362,987,661
Ending balance, shares at Sep. 30, 2023	1,400,000	118,460,743