2) Investments: Schedule of Principal amounts due on mortgage loans held for investment by category (Details)	Dec. 31, 2019 USD ($)
Mortgage Loans Principal Amount due	$ 241,192,422
Residential Mortgage
Mortgage Loans Principal Amount due	113,043,965
Residential construction
Mortgage Loans Principal Amount due	89,430,237
Commercial Loan
Mortgage Loans Principal Amount due	38,718,220
Due in 1 Year
Mortgage Loans Principal Amount due	90,787,065
Due in 1 Year | Residential Mortgage
Mortgage Loans Principal Amount due	6,234,913
Due in 1 Year | Residential construction
Mortgage Loans Principal Amount due	60,376,688
Due in 1 Year | Commercial Loan
Mortgage Loans Principal Amount due	24,175,464
Due in 2-5 Years
Mortgage Loans Principal Amount due	60,236,176
Due in 2-5 Years | Residential Mortgage
Mortgage Loans Principal Amount due	27,161,628
Due in 2-5 Years | Residential construction
Mortgage Loans Principal Amount due	29,053,549
Due in 2-5 Years | Commercial Loan
Mortgage Loans Principal Amount due	4,020,999
Due Thereafter
Mortgage Loans Principal Amount due	90,169,181
Due Thereafter | Residential Mortgage
Mortgage Loans Principal Amount due	79,647,424
Due Thereafter | Residential construction
Mortgage Loans Principal Amount due	0
Due Thereafter | Commercial Loan
Mortgage Loans Principal Amount due	$ 10,521,757