Balance Sheets - USD ($)
|
Mar. 31, 2016 |
Mar. 31, 2015 |
| Current assets |
|
|
| Cash and cash equivalents |
$ 7,534,593
|
$ 9,437,262
|
| Marketable securities, short-term |
19,697,384
|
20,099,288
|
| Accounts receivable, net of allowance for uncollectible accounts of $15,000 |
2,244,086
|
2,963,974
|
| Inventories |
$ 3,205,233
|
3,742,492
|
| Deferred tax assets |
|
102,052
|
| Prepaid expenses and other assets |
$ 734,524
|
574,913
|
| Total current assets |
33,415,820
|
36,919,981
|
| Fixed assets |
|
|
| Machinery and equipment |
8,840,033
|
8,604,926
|
| Leasehold improvements |
1,539,965
|
1,524,298
|
|
10,379,998
|
10,129,224
|
| Less accumulated depreciation and amortization |
8,688,285
|
7,873,816
|
| Net fixed assets |
1,691,713
|
$ 2,255,408
|
| Long-term deferred tax assets |
51,188
|
|
| Marketable securities, long-term |
65,695,335
|
$ 70,913,807
|
| Total assets |
100,854,056
|
110,089,196
|
| Current liabilities |
|
|
| Accounts payable |
317,990
|
358,818
|
| Accrued payroll and other |
556,674
|
$ 1,127,136
|
| Deferred revenue |
714,805
|
|
| Total current liabilities |
$ 1,589,469
|
$ 1,485,954
|
| Long-term deferred tax liabilities |
|
275,708
|
| Shareholders’ equity |
|
|
| Common stock, $0.01 par value, 6,000,000 shares authorized; 4,835,010 issued and outstanding as of March 31, 2016 and 4,857,953 issued and outstanding as of March 31, 2015 |
$ 48,350
|
48,580
|
| Additional paid-in capital |
19,205,682
|
20,850,762
|
| Accumulated other comprehensive income |
451,359
|
746,447
|
| Retained earnings |
79,559,196
|
86,681,745
|
| Total shareholders’ equity |
99,264,587
|
108,327,534
|
| Total liabilities and shareholders’ equity |
$ 100,854,056
|
$ 110,089,196
|