3) Investments: Held-to-maturity Securities (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
AmortizedCost	$ 144,060,136	$ 145,558,425
Held-to-maturity Securities, Unrecognized Holding Gain	15,143,947	10,531,839
Held-to-maturity Securities, Unrecognized Holding Loss	(3,868,074)	(5,583,106)
HeldToMaturitySecuritiesEstimatedFairValue	155,336,009	150,507,158
US Treasury and Government
AmortizedCost	3,555,727	3,560,579
Held-to-maturity Securities, Unrecognized Holding Gain	415,240	292,869
Held-to-maturity Securities, Unrecognized Holding Loss		(4,743)
HeldToMaturitySecuritiesEstimatedFairValue	3,970,967	3,848,705
US States and Political Subdivisions Debt Securities
AmortizedCost	1,801,138	1,805,828
Held-to-maturity Securities, Unrecognized Holding Gain	198,790	182,073
Held-to-maturity Securities, Unrecognized Holding Loss		(1,040)
HeldToMaturitySecuritiesEstimatedFairValue	1,999,928	1,986,861
Corporate Debt Securities
AmortizedCost	130,240,984	134,488,108
Held-to-maturity Securities, Unrecognized Holding Gain	14,123,337	9,836,355
Held-to-maturity Securities, Unrecognized Holding Loss	(3,733,209)	(5,501,743)
HeldToMaturitySecuritiesEstimatedFairValue	140,631,112	138,822,720
Collateralized Mortgage Backed Securities
AmortizedCost	7,838,652	5,091,887
Held-to-maturity Securities, Unrecognized Holding Gain	354,028	190,867
Held-to-maturity Securities, Unrecognized Holding Loss	(134,865)	(75,580)
HeldToMaturitySecuritiesEstimatedFairValue	8,057,815	5,207,174
Redeemable Preferred Stock
AmortizedCost	623,635	612,023
Held-to-maturity Securities, Unrecognized Holding Gain	52,552	29,675
HeldToMaturitySecuritiesEstimatedFairValue	$ 676,187	$ 641,698