Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash	$ 2,022,558	$ 1,860,736
Restricted cash	103,975
Certificates of deposit	3,394,000	3,370,000
Equity investment in mutual funds	246,528	244,825
Accounts receivable	58,626	118,463
Prepaid expense and other assets	144,435	36,989
Total current assets	5,970,122	5,631,013
Long-term certificate of deposit	480,000	725,000
Property and equipment, net	9,235,033	9,245,988
Total assets	15,685,155	15,602,001
Current liabilities:
Trade payables and accrued expenses	194,248	205,161
Income tax payable		11,654
Total current liabilities	194,248	216,815
Deferred income tax payable	187,664	187,664
Total liabilities	381,912	404,479
Stockholders' equity:
Common stock, 3,000,000 authorized, no par value, 1,942,495 issued and outstanding as of March 31, 2019 and December 31, 2018	59,335	59,335
Retained earnings	15,243,908	15,138,187
Total stockholders' equity	15,303,243	15,197,522
Total liabilities and stockholders' equity	$ 15,685,155	$ 15,602,001