Investments: Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Total	$ 229,863	$ 235,927
Gross Unrealized Gains	21	41
Gross Unrealized Losses	(20,957)	(18,190)
Fair Value	208,927	217,778
Mortgage-backed investments, Fannie Mae
Debt Securities, Available-for-sale [Line Items]
Total	11,677	11,800
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,864)	(1,860)
Fair Value	9,813	9,940
Mortgage-backed investments, Freddie Mac
Debt Securities, Available-for-sale [Line Items]
Total	13,652	13,720
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,921)	(1,831)
Fair Value	11,731	11,889
Mortgage backed investments Ginnie Mae
Debt Securities, Available-for-sale [Line Items]
Total	28,633	29,426
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(1,639)	(1,601)
Fair Value	26,994	27,843
Mortgage-backed investments, Other
Debt Securities, Available-for-sale [Line Items]
Total	32,367	34,295
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,020)	(1,906)
Fair Value	30,347	32,389
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Total	36,770	36,968
Gross Unrealized Gains	17	17
Gross Unrealized Losses	(5,398)	(6,102)
Fair Value	31,389	30,883
U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Total	73,764	76,718
Gross Unrealized Gains	4	6
Gross Unrealized Losses	(1,924)	(2,370)
Fair Value	71,844	74,354
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Total	33,000	33,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6,191)	(2,520)
Fair Value	$ 26,809	$ 30,480