7) Bank and Other Loans Payable: Schedule of combined maturities of bank loans payable, lines of credit and notes and contracts payable (Details)	Dec. 31, 2019 USD ($)
Bank loans payable, lines of credit and notes and contracts payable	$ 217,572,612
Due in Year One
Bank loans payable, lines of credit and notes and contracts payable	192,985,602
Due in Year Two
Bank loans payable, lines of credit and notes and contracts payable	4,256,684
Due in Year Three
Bank loans payable, lines of credit and notes and contracts payable	1,151,703
Due in Year Four
Bank loans payable, lines of credit and notes and contracts payable	1,218,742
Due in Year Five
Bank loans payable, lines of credit and notes and contracts payable	1,247,461
Due Thereafter
Bank loans payable, lines of credit and notes and contracts payable	$ 16,712,420