Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 1,860,736	$ 1,618,583
Restricted cash		33,821
Certificates of deposit	3,370,000	2,662,890
Equity investment in mutual funds	244,825
Accounts receivable	118,463	113,067
Prepaid expense and other assets	36,989	50,354
Total current assets	5,631,013	4,478,715
Long-term certificate of deposit	725,000	950,000
Property and equipment, net	9,245,988	9,295,022
Total assets	15,602,001	14,723,737
Current liabilities:
Trade payables and accrued expenses	205,161	207,166
Income tax payable	11,654	13,346
Total current liabilities	216,815	220,512
Deferred income tax payable	187,664	187,664
Total liabilities	404,479	408,176
Stockholders' equity:
Common stock, 3,000,000 authorized, no par value, 1,942,495 issued and outstanding as of December 31, 2018 and 2017	59,335	59,335
Retained earnings	15,138,187	14,256,226
Total stockholders' equity	15,197,522	14,315,561
Total liabilities and stockholders' equity	$ 15,602,001	$ 14,723,737