Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net income	$ 1,201,886	$ 2,375,399
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Bad debt expense	69,010
Stock-based compensation	124,972	86,675
Depreciation	397,965	318,076
ESOP compensation expense	297,670	279,502
Deferred income tax expense	137,035	19,707
Changes in assets and liabilities:
Increase in trade receivable, net	(3,642,605)	(195,828)
Decrease (increase) in income taxes receivable	35,956	(27,923)
Increase in inventories, net	(3,539,511)	(622,344)
Decrease (increase) in prepaid expenses and other current assets	924,361	(549,141)
Increase (decrease) in accounts payable	115,902	(750,220)
(Decrease) increase in accrued salaries and wages	(236,821)	219,168
Increase in vacation accrual	75,501	68,463
Decrease in ESOP payable	(51,041)	(33,750)
Increase (decrease) in other accrued expenses	39,234	(86,865)
Increase in payroll and other taxes withheld	8,219	11,490
Decrease in contract liabilities	(81,989)
Net cash (used in) provided by operating activities	(4,124,256)	1,112,409
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(538,550)	(632,023)
Purchase of investment securities	(3,891,435)	(10,101,613)
Proceeds from sale/maturity of investment securities	9,581,630	8,121,986
Net cash provided by (used in) investing activities	5,151,645	(2,611,650)
Cash Flows from Financing Activities:
Dividends on common stock	(4,144,075)	(1,744,062)
Purchase of treasury stock		(109,694)
Proceeds from exercise of stock options	306,081	201,586
Net cash used in financing activities	(3,837,994)	(1,652,170)
Decrease in cash and cash equivalents	(2,810,605)	(3,151,411)
Cash and cash equivalents, beginning of period	4,298,796	10,058,163
Cash and cash equivalents, end of period	1,488,191	6,906,752
Supplemental Schedule of Cash Flow Information:
Income taxes paid	$ 80,000	$ 810,000