Balance Sheets - USD ($)	Mar. 31, 2020	Mar. 31, 2019
ASSETS
Cash and cash equivalents	$ 8,065,594	$ 6,877,304	[1]
Marketable securities, short-term	19,084,814	12,487,821	[1]
Accounts receivable, net of allowance for uncollectible accounts of $15,000	2,694,018	2,995,638	[1]
Inventories	3,884,450	4,264,876	[1]
Prepaid expenses and other assets	655,835	816,045	[1]
Total current assets	34,384,711	27,441,684	[1]
Fixed assets
Machinery and equipment	9,280,062	9,365,806	[1]
Leasehold improvements	1,797,245	1,787,269	[1]
Property, Plant and Equipment, Gross, Ending Balance	11,077,307	11,153,075	[1]
Less accumulated depreciation and amortization	10,494,840	10,258,240	[1]
Net fixed assets	582,467	894,835	[1]
Deferred tax assets	108,119	353,735	[1]
Marketable securities, long-term	43,606,495	54,925,633	[1]
Right-of-use asset – operating lease	816,358		[1]
Total assets	79,498,150	83,615,887	[1]
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	186,993	375,188	[1]
Accrued payroll and other	482,074	460,488	[1]
Operating lease	127,134		[1]
Total current liabilities	796,201	835,676	[1]
Operating lease	706,600
Total liabilities	1,502,801	835,676
Shareholders’ equity
Common stock, $0.01 par value, 6,000,000 shares authorized; 4,835,038 issued and outstanding as of March 31, 2020 and 4,846,010 as of March 31, 2019	48,350	48,460	[1]
Additional paid-in capital	19,383,956	19,910,558	[1]
Accumulated other comprehensive income (loss)	516,523	(82,725)	[1]
Retained earnings	58,046,520	62,903,918	[1]
Total shareholders’ equity	77,995,349	82,780,211	[1]
Total liabilities and shareholders’ equity	$ 79,498,150	$ 83,615,887	[1]

[1] The March 31, 2019 Balance Sheet is derived from the audited financial statements contained in our Annual Report on Form 10-K for the fiscal year ended March 31, 2019.