2) Investments: Schedule of Unrealized Loss on Investments (Details)	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)
Held-to-maturity Securities, Unrecognized Holding Loss	$ 1,820,262	$ 4,857,195
Debt Securities, Held-to-maturity, Fair Value	83,639,680	122,649,830
Available For Sale Securities Fair Value	2,176,931
US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	579,423	727,798
Debt Securities, Held-to-maturity, Fair Value	52,250,079	40,625,915
US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	71,013	111,271
Debt Securities, Held-to-maturity, Fair Value	2,439,903	4,680,774
Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	1,007,504	3,704,137
Debt Securities, Held-to-maturity, Fair Value	24,745,123	72,857,780
Collateralized Mortgage Backed Securities
Held-to-maturity Securities, Unrecognized Holding Loss	162,131	308,864
Debt Securities, Held-to-maturity, Fair Value	4,193,154	4,395,361
Redeemable Preferred Stock
Held-to-maturity Securities, Unrecognized Holding Loss	191	5,125
Debt Securities, Held-to-maturity, Fair Value		90,000
Industrial, miscellaneous and all other
Debt Securities, Available-for-sale, Unrealized Loss	632,669
Equity Securities
Debt Securities, Available-for-sale, Unrealized Loss	632,669
Less Than 12 Months
Held-to-maturity Securities, Unrecognized Holding Loss	757,039	2,616,732
Debt Securities, Held-to-maturity, Fair Value	65,901,527	65,372,847
Less Than 12 Months | US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	532,010	10,519
Debt Securities, Held-to-maturity, Fair Value	51,606,699	695,863
Less Than 12 Months | US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	296	6,643
Debt Securities, Held-to-maturity, Fair Value	214,882	1,791,257
Less Than 12 Months | Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	167,786	2,514,549
Debt Securities, Held-to-maturity, Fair Value	11,551,865	61,090,431
Less Than 12 Months | Collateralized Mortgage Backed Securities
Held-to-maturity Securities, Unrecognized Holding Loss	56,756	79,896
Debt Securities, Held-to-maturity, Fair Value	2,516,660	1,705,296
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
Less Than 12 Months | Industrial, miscellaneous and all other
Debt Securities, Available-for-sale, Unrealized Loss	$ 213,097
No. of Investment Positions	98
Less Than 12 Months | Equity Securities
Debt Securities, Available-for-sale, Unrealized Loss	$ 213,097
No. of Investment Positions	98
More Than 12 Months
Held-to-maturity Securities, Unrecognized Holding Loss	$ 1,063,223	2,240,463
Debt Securities, Held-to-maturity, Fair Value	17,738,153	57,276,983
Available For Sale Securities Fair Value	1,329,213
More Than 12 Months | US Treasury Securities
Held-to-maturity Securities, Unrecognized Holding Loss	47,413	717,279
Debt Securities, Held-to-maturity, Fair Value	643,380	39,930,052
More Than 12 Months | US States and Political Subdivisions Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	70,717	104,628
Debt Securities, Held-to-maturity, Fair Value	2,225,021	2,889,517
More Than 12 Months | Corporate Debt Securities
Held-to-maturity Securities, Unrecognized Holding Loss	839,718	1,189,588
Debt Securities, Held-to-maturity, Fair Value	13,193,258	11,767,349
More Than 12 Months | Collateralized Mortgage Backed Securities
Held-to-maturity Securities, Unrecognized Holding Loss	105,375	228,968
Debt Securities, Held-to-maturity, Fair Value	1,676,494	2,690,065
More Than 12 Months | Redeemable Preferred Stock
Held-to-maturity Securities, Unrecognized Holding Loss		0
Debt Securities, Held-to-maturity, Fair Value		$ 0
More Than 12 Months | Industrial, miscellaneous and all other
Debt Securities, Available-for-sale, Unrealized Loss	$ 419,572
No. of Investment Positions	81
More Than 12 Months | Equity Securities
Debt Securities, Available-for-sale, Unrealized Loss	$ 419,572
No. of Investment Positions	81