Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net earnings (loss)	$ (1,349,365)	$ 5,600,809
Adjustments to reconcile net earnings (loss) to cash provided by operating activities:
Depreciation	614,373	715,192
Deferred taxes	(118,969)	(7,846)
Compensation expense for restricted stock	166,472	144,480
Change in postretirement benefits	5,477	14,861
Lower of cost or net realizable value inventory adjustment	955,605
Decrease (increase) in operating assets:
Accounts receivable, net	296,595	7,629
Inventories	12,013,518	(9,317,746)
Income taxes recoverable	(304,527)
Other assets, current and non-current	(513,442)	(635,701)
Increase (decrease) in operating liabilities:
Accounts payable and accrued expenses	(2,730,307)	2,574,885
Income taxes payable	(159,694)	913,139
Contribution to retirement plan	100,500	90,000
Employee compensation and related expenses	74,094	87,529
Other non-current liabilities	18,658
NET CASH PROVIDED BY OPERATING ACTIVITIES	9,068,988	187,231
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(796,253)	(205,652)
Increase in cash surrender value of officers’ life insurance	(8,740)	(12,550)
NET CASH USED IN INVESTING ACTIVITIES	(804,993)	(218,202)
FINANCING ACTIVITIES
Cash dividends paid	(559,956)	(350,472)
NET CASH USED IN FINANCING ACTIVITIES	(559,956)	(350,472)
INCREASE (DECREASE) IN CASH	7,704,039	(381,443)
Cash at beginning of period	11,667,161	11,667,161
CASH AT END OF PERIOD	$ 19,371,200	$ 3,671,139