Federal Income Taxes: Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
ALLL	$ 3,198	$ 3,288
Reserve for unfunded commitments	52	59
Deferred compensation	218	194
Net unrealized loss on investments available-for-sale	3,811	0
Employee benefit plans	273	385
Accrued expenses	104	114
Core deposit intangible	63	53
Expenses to facilitate branch acquisition	18	20
Split dollar life insurance	101	87
Lease liability	725	799
Total deferred tax assets	8,563	4,999
Deferred tax liabilities:
FHLB stock dividends	1	3
Loan origination fees and costs	1,246	1,098
Net unrealized gain on derivative cash flow hedge	2,201	312
Net unrealized gain on investments available for sale	0	42
Fixed assets	1,699	1,818
Goodwill	67	54
Right of use asset	688	766
Other, net	64	56
Total deferred tax liabilities	5,966	4,149
Deferred tax assets, net	$ 2,597	$ 850