7) Bank and Other Loans Payable: Schedule of combined maturities of bank loans payable, lines of credit and notes (Details)	Dec. 31, 2020 USD ($)
Bank loans payable, lines of credit and notes and contracts payable	$ 297,824,368
Due in Year One
Bank loans payable, lines of credit and notes and contracts payable	284,242,327
Due in Year Two
Bank loans payable, lines of credit and notes and contracts payable	884,383
Due in Year Three
Bank loans payable, lines of credit and notes and contracts payable	926,186
Due in Year Four
Bank loans payable, lines of credit and notes and contracts payable	937,315
Due in Year Five
Bank loans payable, lines of credit and notes and contracts payable	1,634,157
DueThereafter
Bank loans payable, lines of credit and notes and contracts payable	$ 9,200,000