CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2020	Sep. 30, 2019
Current assets
Cash and cash equivalents	$ 22,984,249	$ 22,416,830
Accounts receivable	3,864,656	2,348,537
Contract asset	0	80,182
Inventories	4,709,342	4,470,694
Prepaid expenses and other current assets	1,107,723	642,049
Total current assets	32,665,970	29,958,292
Property and equipment, net	8,225,732	8,444,692
Other assets	205,276	154,041
Total assets	41,096,978	38,557,025
Current liabilities
Accounts payable	949,080	1,079,073
Accrued expenses	1,506,790	1,110,918
Contract liability	106,341	29,231
Total current liabilities	2,562,211	2,219,222
Deferred income taxes	129,689	129,651
Other liabilities	2,241	0
Total liabilities	2,694,141	2,348,873
Commitments and contingencies (See Note 6)
Shareholders' equity
Preferred stock, 10,000,000 shares authorized, $.001 par value, of which 200,000 shares are authorized as Class A Convertible stock. No shares issued and outstanding at June 30, 2020 and September 30, 2019
Common stock, $.001 par value: 75,000,000 shares authorized, 19,080,877 and 19,005,487 issued at June 30, 2020 and September 30, 2019	19,081	19,006
Additional paid-in capital	52,155,835	51,987,096
Retained earnings	7,596,458	5,570,587
Treasury stock, at cost, 2,096,451 shares at June 30, 2020 and September 30, 2019	(21,368,537)	(21,368,537)
Total shareholders' equity	38,402,837	36,208,152
Total liabilities and shareholders' equity	$ 41,096,978	$ 38,557,025