Fair Value Disclosures [Text Block]: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale	$ 384,974	$ 453,464
Equity Securities, FV-NI	3,747	5,166
Corporate Debt Securities
Debt Securities, Available-for-sale	162,023	197,489
Collateralized Mortgage Backed Securities
Debt Securities, Available-for-sale	5,382	5,840
US Treasury Securities
Debt Securities, Available-for-sale	50,549	62,809
US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-sale	6,123	6,486
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale	154,008	167,934
Debt Security, Government, Non-US
Debt Securities, Available-for-sale	6,889	7,044
US Government Agencies Debt Securities
Debt Securities, Available-for-sale		3
Redeemable Preferred Stock
Debt Securities, Available-for-sale		5,859
Fair Value, Recurring
Debt Securities, Available-for-sale	384,974	453,464
Equity Securities, FV-NI	3,747	5,166
Assets, Fair Value Disclosure	388,721	458,630
Fair Value, Recurring | Corporate Debt Securities
Debt Securities, Available-for-sale	162,023	197,489
Fair Value, Recurring | Collateralized Mortgage Backed Securities
Debt Securities, Available-for-sale	5,382	5,840
Fair Value, Recurring | US Treasury Securities
Debt Securities, Available-for-sale	50,549	62,809
Fair Value, Recurring | US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-sale	6,123	6,486
Fair Value, Recurring | US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale	154,008	167,934
Fair Value, Recurring | Debt Security, Government, Non-US
Debt Securities, Available-for-sale	6,889	7,044
Fair Value, Recurring | COMMON STOCK, AMOUNT
Equity Securities, FV-NI	2,864	2,366
Fair Value, Recurring | Nonredeemable Preferred Stock
Equity Securities, FV-NI	883	2,800
Fair Value, Recurring | US Government Agencies Debt Securities
Debt Securities, Available-for-sale		3
Fair Value, Recurring | Redeemable Preferred Stock
Debt Securities, Available-for-sale		5,859
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Debt Securities, Available-for-sale	0	5,859
Equity Securities, FV-NI	3,747	5,166
Assets, Fair Value Disclosure	3,747	11,025
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Corporate Debt Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Collateralized Mortgage Backed Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | US Treasury Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Debt Security, Government, Non-US
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | COMMON STOCK, AMOUNT
Equity Securities, FV-NI	2,864	2,366
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Nonredeemable Preferred Stock
Equity Securities, FV-NI	883	2,800
Fair Value, Inputs, Level 1 | Fair Value, Recurring | US Government Agencies Debt Securities
Debt Securities, Available-for-sale		0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Redeemable Preferred Stock
Debt Securities, Available-for-sale		5,859
Fair Value, Inputs, Level 2 | Fair Value, Recurring
Debt Securities, Available-for-sale	383,445	445,896
Equity Securities, FV-NI	0	0
Assets, Fair Value Disclosure	383,445	445,896
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Corporate Debt Securities
Debt Securities, Available-for-sale	162,023	197,489
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Collateralized Mortgage Backed Securities
Debt Securities, Available-for-sale	5,382	5,840
Fair Value, Inputs, Level 2 | Fair Value, Recurring | US Treasury Securities
Debt Securities, Available-for-sale	50,549	62,809
Fair Value, Inputs, Level 2 | Fair Value, Recurring | US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-sale	6,123	6,486
Fair Value, Inputs, Level 2 | Fair Value, Recurring | US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale	152,479	166,225
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Debt Security, Government, Non-US
Debt Securities, Available-for-sale	6,889	7,044
Fair Value, Inputs, Level 2 | Fair Value, Recurring | COMMON STOCK, AMOUNT
Equity Securities, FV-NI	0	0
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Nonredeemable Preferred Stock
Equity Securities, FV-NI	0	0
Fair Value, Inputs, Level 2 | Fair Value, Recurring | US Government Agencies Debt Securities
Debt Securities, Available-for-sale		3
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Redeemable Preferred Stock
Debt Securities, Available-for-sale		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring
Debt Securities, Available-for-sale	1,529	1,709
Equity Securities, FV-NI	0	0
Assets, Fair Value Disclosure	1,529	1,709
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Corporate Debt Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Collateralized Mortgage Backed Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | US Treasury Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-sale	1,529	1,709
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Debt Security, Government, Non-US
Debt Securities, Available-for-sale	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | COMMON STOCK, AMOUNT
Equity Securities, FV-NI	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Nonredeemable Preferred Stock
Equity Securities, FV-NI	$ 0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | US Government Agencies Debt Securities
Debt Securities, Available-for-sale		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Redeemable Preferred Stock
Debt Securities, Available-for-sale		$ 0