Balance Sheets - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Accounts receivable	$ 78,119	$ 104,741
Prepaid expense and other assets	171,202	212,279
Total current assets	9,579,388	9,388,882
Property and equipment, net	9,036,105	9,095,403
Deferred tax asset	231,744	329,121
Total assets	18,847,237	18,813,406
Current liabilities:
Trade payables and accrued expenses	52,420	159,159
Income tax payable	0	151,404
Unearned revenue	211,763	184,785
Total current liabilities	264,183	495,348
Total liabilities	264,183	495,348
Treasury stock, 39,012 and 22,946 shares, at cost, respectively, as of December 31, 2024 and 2023	472,602	263,748
Common stock, 3,000,000 shares authorized, no par value, 2,066,044 and 2,027,032 shares issued and outstanding, respectively, as of December 31, 2024, and 2,014,283 and 1,991,337 shares issued and outstanding, respectively, as of December 31, 2023	59,335	59,335
Additional paid in capital	3,374,002	3,150,376
Retained earnings	15,622,319	15,372,095
Total stockholders' equity	18,583,054	18,318,058
Total liabilities and stockholders' equity	18,847,237	18,813,406
Cash and Cash Equivalents Excluding Certificates of Deposit [Member]
Current assets:
Cash and cash equivalents	3,421,576	7,546,689
Certificates of Deposit [Member]
Current assets:
Cash and cash equivalents	$ 5,908,491	$ 1,525,173