Balance Sheets (Current Period Unaudited) - USD ($)
Jun. 30, 2016
Mar. 31, 2016
 [1]
Current assets    
Cash and cash equivalents $ 1,905,697 $ 7,534,593
Marketable securities, short-term 19,559,795 19,697,384
Accounts receivable, net of allowance for uncollectible accounts of $15,000 2,651,926 2,244,086
Inventories 3,186,450 3,205,233
Prepaid expenses and other assets 701,867 734,524
Total current assets 28,005,735 33,415,820
Fixed assets    
Machinery and equipment 8,839,621 8,840,033
Leasehold improvements 1,539,965 1,539,965
10,379,586 10,379,998
Less accumulated depreciation and amortization 8,882,264 8,688,285
Net fixed assets 1,497,322 1,691,713
Long-term deferred tax assets 51,188
Marketable securities, long-term 71,170,799 65,695,335
Total assets 100,673,856 100,854,056
Current liabilities    
Accounts payable 297,831 317,990
Accrued payroll and other 591,821 556,674
Income taxes payable 1,281,154
Deferred revenue 714,805 714,805
Total current liabilities 2,885,611 1,589,469
Long-term deferred tax liabilities 520
Shareholders’ equity    
Common stock, $0.01 par value, 6,000,000 shares authorized; 4,835,010 issued and outstanding as of June 30, 2016 and March 31, 2016 48,350 48,350
Additional paid-in capital 19,205,682 19,205,682
Accumulated other comprehensive income 676,962 451,359
Retained earnings 77,856,731 79,559,196
Total shareholders’ equity 97,787,725 99,264,587
Total liabilities and shareholders’ equity $ 100,673,856 $ 100,854,056
[1] The March 31, 2016 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, 2016.