3. Investments: Schedule of Investments Classified by Contractual Maturity Date (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Amortized Cost, due in one year	$ 0
Fair Value, due in one year	0
Amortized Cost, due after one year through five years	500,000
Fair Value, due after one year through five years	483,000
Amortized Cost, due after five years through ten years	1,849,000
Fair Value, due after five years through ten years	1,791,000
Available-for-sale Securities, Amortized Cost Basis	5,218,000	$ 5,673,000
Available-for-sale, at fair value	5,144,707	5,578,159
Total debt securities, Amortized Cost Basis	5,086,000
Total debt securities, Fair Value	5,013,000
Government Sponsored Enterprises residential mortgage-backed securities
Available-for-sale Securities, Amortized Cost Basis	2,737,000	3,193,000
Available-for-sale, at fair value	2,740,000	3,180,000
Investments in money market funds
Available-for-sale Securities, Amortized Cost Basis	132,000	130,000
Available-for-sale, at fair value	$ 132,000	$ 130,000