Note 5. Fair Value Disclosures: Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 3,297	$ 3,279	$ 3,267	$ 3,034
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	205	22	255	282
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(21)	(16)	(41)	(31)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	3,481	3,285	3,481	3,285
Commercial Mortgage Backed Securities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,016	869	953	593
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	217	37	280	313
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,233	906	1,233	906
US States and Political Subdivisions Debt Securities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	2,281	2,410	2,314	2,441
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(12)	(15)	(25)	(31)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(21)	(16)	(41)	(31)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 2,248	$ 2,379	$ 2,248	$ 2,379