Note L - Stockholders' Equity (Tables)

3 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

			Accumulated
			Other			Additional
	Common		Comprehensive			Paid-In		Treasury			Retained
	Stock		Loss			Capital		Stock			Earnings			Total
BALANCE AT MARCH 31, 2021	$	8,334,785	$	(11,187,841	)	$	30,003,462	$	(7,203,342	)	$	45,392,912		$	65,339,976
Net earnings		—		—			—		—			11,311,797			11,311,797
Other comprehensive loss		—		(13,693,337	)		—		—			—			(13,693,337	)
Paid in capital – restricted stock awards		—		—			121,704		—			—			121,704
Cash dividends ($0.02 per share)		—		—			—		—			(137,865	)		(137,865	)
BALANCE AT JUNE 30, 2021	$	8,334,785	$	(24,881,178	)	$	30,125,166	$	(7,203,342	)	$	56,566,844		$	62,942,275

			Accumulated
			Other		Additional
	Common		Comprehensive		Paid-In		Treasury			Retained
	Stock		Loss		Capital		Stock			Earnings			Total
BALANCE AT MARCH 31, 2020	$	8,295,160	$	—	$	29,565,416	$	(5,525,964	)	$	34,530,755		$	66,865,367
Net loss		—		—		—		—			(858,862	)		(858,862	)
Issuance of restricted stock		11,000		—		—		—			—			11,000
Paid in capital – restricted stock awards		—		—		99,814		—			—			99,814
Cash dividends ($0.02 per share)		—		—		—		—			(143,229	)		(143,229	)
BALANCE AT JUNE 30, 2020	$	8,306,160	$	—	$	29,665,230	$	(5,525,964	)	$	33,528,664		$	65,974,090