3) Investments: Schedule of Unrealized Loss on Investments (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	$ 82,086
Debt Securities, Held-to-maturity, Fair Value	20,491,005	$ 40,625,915
US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	10,582
Debt Securities, Held-to-maturity, Fair Value	1,489,622	4,680,774
Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	846,167
Debt Securities, Held-to-maturity, Fair Value	15,296,393	72,857,780
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Held-to-maturity Securities, Unrecognized Holding Loss	55,141
Debt Securities, Held-to-maturity, Fair Value	1,340,152	4,395,361
Total unrealized losses
Debt Securities, Held-to-maturity, Fair Value	38,617,172	122,649,830
Redeemable Preferred Stock
Debt Securities, Held-to-maturity, Fair Value		90,000
Less Than 12 Months | US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	0	10,519
Debt Securities, Held-to-maturity, Fair Value	0	695,863
Less Than 12 Months | US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	114	6,643
Debt Securities, Held-to-maturity, Fair Value	200,992	1,791,257
Less Than 12 Months | Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	187,944	2,514,549
Debt Securities, Held-to-maturity, Fair Value	4,835,513	61,090,431
Less Than 12 Months | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Held-to-maturity Securities, Unrecognized Holding Loss	23,369	79,896
Debt Securities, Held-to-maturity, Fair Value	222,869	1,705,296
Less Than 12 Months | Total unrealized losses
Held-to-maturity Securities, Unrecognized Holding Loss	211,427	2,616,732
Debt Securities, Held-to-maturity, Fair Value	5,259,374	65,372,847
Less Than 12 Months | Redeemable Preferred Stock
Held-to-maturity Securities, Unrecognized Holding Loss		5,125
Debt Securities, Held-to-maturity, Fair Value		90,000
More Than 12 Months | US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	82,086	717,279
Debt Securities, Held-to-maturity, Fair Value	20,491,005	39,930,052
More Than 12 Months | US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	10,468	104,628
Debt Securities, Held-to-maturity, Fair Value	1,288,630	2,889,517
More Than 12 Months | Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	658,223	1,189,588
Debt Securities, Held-to-maturity, Fair Value	10,460,880	11,767,349
More Than 12 Months | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Held-to-maturity Securities, Unrecognized Holding Loss	31,772	228,968
Debt Securities, Held-to-maturity, Fair Value	1,117,283	2,690,065
More Than 12 Months | Total unrealized losses
Held-to-maturity Securities, Unrecognized Holding Loss	782,549	2,240,463
Debt Securities, Held-to-maturity, Fair Value	33,357,798	57,276,983
More Than 12 Months | Redeemable Preferred Stock
Held-to-maturity Securities, Unrecognized Holding Loss		0
Debt Securities, Held-to-maturity, Fair Value		0
Total
Held-to-maturity Securities, Unrecognized Holding Loss	993,976
Total | US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	82,086	727,798
Total | US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	10,582	111,271
Total | Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	846,167	3,704,137
Total | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Held-to-maturity Securities, Unrecognized Holding Loss	55,141	308,864
Total | Total unrealized losses
Held-to-maturity Securities, Unrecognized Holding Loss	$ 993,976	4,857,195
Total | Redeemable Preferred Stock
Held-to-maturity Securities, Unrecognized Holding Loss		$ 5,125