CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Current assets
Cash and cash equivalents	$ 22,416,830	$ 20,390,713
Accounts receivable	2,348,537	3,449,893
Contract asset	80,182	0
Inventories	4,470,694	4,280,108
Prepaid expenses and other current assets	642,049	544,234
Total current assets	29,958,292	28,664,948
Property and equipment, net	8,444,692	8,786,737
Other assets	154,041	181,993
Total assets	38,557,025	37,633,678
Current liabilities
Accounts payable	1,079,073	1,529,792
Accrued expenses	1,110,918	1,463,021
Contract liability	29,231	356,801
Total current liabilities	2,219,222	3,349,614
Non-current deferred income taxes	129,651	129,594
Total liabilities	2,348,873	3,479,208
Commitments and contingencies (See Note 14)
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 September 30, 2019 and 2018
Common stock, $.001 par value: 75,000,000 shares authorized, 19,005,487 and 18,937,050 issued at September 30, 2019 and 2018, respectively	19,006	18,937
Additional paid-in capital	51,987,096	51,783,779
Retained earnings	5,570,587	3,720,291
Treasury stock, at cost, 2,096,451 shares at September 30, 2019 and at September 30, 2018	(21,368,537)	(21,368,537)
Total shareholders' equity	36,208,152	34,154,470
Total liabilities and shareholders' equity	$ 38,557,025	$ 37,633,678