3) Investments: Residential Real Estate Investment (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	$ 151,417,470	$ 145,165,921
Residential Real Estate 1
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	73,178,439	76,191,985
Residential Real Estate 1 | ArizonaMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	739,333	742,259
Residential Real Estate 1 | CaliforniaMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	5,404,417	5,848,389
Residential Real Estate 1 | ColoradoMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	204,538	364,489
Residential Real Estate 1 | FloridaMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	8,273,416	8,327,355
Residential Real Estate 1 | OhioMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	46,658	46,658
Residential Real Estate 1 | OklahomaMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	17,500
Residential Real Estate 1 | TexasMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	777,843	1,091,188
Residential Real Estate 1 | UtahMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	57,428,553	59,485,466
Residential Real Estate 1 | WashingtonMember
Real estate held for investment, net of accumulated depreciation of $16,732,122 and $16,138,439 for 2017 and 2016	$ 286,181	$ 286,181