3) Investments: Investments Classified by Contractual Maturity Date (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Amortized Cost	$ 136,877,427	$ 129,449,410
HeldToMaturitySecuritiesEstimatedFairValue	154,312,937	146,217,089
Available-for-sale Securities, Amortized Cost Basis	5,373,763
AvailableForSaleSecuritiesEstimatedFairValue	4,956,549
Collateralized Mortgage Backed Securities
Amortized Cost	4,430,908	5,010,519
HeldToMaturitySecuritiesEstimatedFairValue	4,755,364	5,262,334
Redeemable Preferred Stock
Amortized Cost	760,078	1,510,878
HeldToMaturitySecuritiesEstimatedFairValue	811,594	1,607,765
Nonredeemable Preferred Stock
Available-for-sale Securities, Amortized Cost Basis		20,281
AvailableForSaleSecuritiesEstimatedFairValue		18,795
Common Stock
Available-for-sale Securities, Amortized Cost Basis	5,373,763
AvailableForSaleSecuritiesEstimatedFairValue	4,956,549
Due in 2013
Amortized Cost	1,703,989
HeldToMaturitySecuritiesEstimatedFairValue	1,744,859
DueIn2014Through2017Member
Amortized Cost	20,964,972
HeldToMaturitySecuritiesEstimatedFairValue	23,065,578
DueIn2018Through2022Member
Amortized Cost	44,938,154
HeldToMaturitySecuritiesEstimatedFairValue	51,439,135
DueAfter2022Member
Amortized Cost	64,079,326
HeldToMaturitySecuritiesEstimatedFairValue	$ 72,496,407