Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2019	Mar. 31, 2019	[1]
ASSETS
Cash and cash equivalents	$ 13,039,292	$ 6,877,304
Marketable securities, short-term	2,999,689	12,487,821
Accounts receivable, net of allowance for uncollectible accounts of $15,000	2,746,683	2,995,638
Inventories	4,219,783	4,264,876
Prepaid expenses and other assets	646,917	816,045
Total current assets	23,652,364	27,441,684
Fixed assets
Machinery and equipment	9,381,906	9,365,806
Leasehold improvements	1,787,269	1,787,269
	11,169,175	11,153,075
Less accumulated depreciation and amortization	10,348,140	10,258,240
Net fixed assets	821,035	894,835
Deferred tax assets	194,735	353,735
Marketable securities, long-term	58,612,189	54,925,633
Right-of-use asset – operating lease	225,373
Total assets	83,505,696	83,615,887
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable	237,718	375,188
Accrued payroll and other	455,814	460,488
Income taxes payable	442,493
Operating lease	172,796
Total current liabilities	1,308,821	835,676
Operating lease	85,192
Total liabilities	1,394,013	835,676
Shareholders’ equity
Common stock, $0.01 par value, 6,000,000 shares authorized; 4,846,010 issued and outstanding as of June 30, 2019 and March 31, 2019	48,460	48,460
Additional paid-in capital	19,910,558	19,910,558
Accumulated other comprehensive income (loss)	487,338	(82,725)
Retained earnings	61,665,327	62,903,918
Total shareholders’ equity	82,111,683	82,780,211
Total liabilities and shareholders’ equity	$ 83,505,696	$ 83,615,887

[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.