Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES
Net earnings (loss)	$ (2,065,101)	$ 332,655
Adjustments to reconcile net earnings (loss) to cash provided by operating activities:
Depreciation	804,000	855,900
Deferred taxes	(539,059)	71,156
Change in postretirement benefits	28,841	46,343
Decrease (increase) in operating assets:
Accounts receivable, net	(380,557)	(326,624)
Inventories	7,887,724	433,698
Federal income taxes recoverable	(913,347)
Other	(121,378)	(196,695)
Accounts payable and accrued expenses	126,617	(322,361)
Contribution to retirement plan	87,000	102,000
Employee compensation and related expenses	24,089	1,274
NET CASH PROVIDED BY OPERATING ACTIVITIES	4,938,829	997,346
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(436,787)	(1,321,185)
Increase in cash surrender value of officers’ life insurance	(29,500)	(34,500)
NET CASH USED IN INVESTING ACTIVITIES	(466,287)	(1,355,685)
FINANCING ACTIVITIES
Cash dividends paid	(135,989)	(135,989)
NET CASH USED IN FINANCING ACTIVITIES	(135,989)	(135,989)
INCREASE (DECREASE) IN CASH	4,336,553	(494,328)
Cash at beginning of period	2,796,762	2,225,924
CASH AT END OF PERIOD	$ 7,133,315	$ 1,731,596