Loans - Impaired Loans, Individually Evaluated (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Impaired Loans [Abstract]
Unpaid Principal Balance	$ 9,506		$ 9,506		$ 12,526
Recorder Investment - Without Allowance	6,148		6,148		10,072
Recorder Investment - With Allowance	2,931		2,931		2,321
Total Recorded Investment	9,079		9,079		12,393
Related Allowance	729		729		724
Average Recorded Investment	9,416	$ 5,360	10,408	$ 8,171
Interest Income Recognized	96	122	235	206
Impaired loans, interest income forgone			109	91
Commercial business
Impaired Loans [Abstract]
Unpaid Principal Balance	1,834		1,834		997
Recorder Investment - Without Allowance	714		714		714
Recorder Investment - With Allowance	819		819		283
Total Recorded Investment	1,533		1,533		997
Related Allowance	242		242		84
Average Recorded Investment	1,542	933	1,360	1,274
Interest Income Recognized	18	19	41	37
One-to-four family
Impaired Loans [Abstract]
Unpaid Principal Balance	6,114		6,114		8,748
Recorder Investment - Without Allowance	4,463		4,463		7,236
Recorder Investment - With Allowance	1,531		1,531		1,384
Total Recorded Investment	5,994		5,994		8,620
Related Allowance	199		199		205
Average Recorded Investment	5,961	2,536	6,847	3,590
Interest Income Recognized	74	61	147	99
Home equity
Impaired Loans [Abstract]
Unpaid Principal Balance	378		378		335
Recorder Investment - Without Allowance	233		233		256
Recorder Investment - With Allowance	145		145		79
Total Recorded Investment	378		378		335
Related Allowance	19		19		25
Average Recorded Investment	368	549	357	682
Interest Income Recognized	4	9	9	15
Commercial and multifamily
Impaired Loans [Abstract]
Unpaid Principal Balance	353		353		353
Recorder Investment - Without Allowance	353		353		353
Recorder Investment - With Allowance	0		0		0
Total Recorded Investment	353		353		353
Related Allowance	0		0		0
Average Recorded Investment	353	585	353	1,607
Interest Income Recognized	5	8	10	15
Construction and land
Impaired Loans [Abstract]
Unpaid Principal Balance	38		38		1,215
Recorder Investment - Without Allowance	0		0		1,177
Recorder Investment - With Allowance	38		38		38
Total Recorded Investment	38		38		1,215
Related Allowance	6		6		7
Average Recorded Investment	255	124	575	424
Interest Income Recognized	(13)	2	1	4
Manufactured homes
Impaired Loans [Abstract]
Unpaid Principal Balance	371		371		445
Recorder Investment - Without Allowance	103		103		46
Recorder Investment - With Allowance	262		262		394
Total Recorded Investment	365		365		440
Related Allowance	214		214		349
Average Recorded Investment	396	475	411	431
Interest Income Recognized	6	18	15	28
Floating homes
Impaired Loans [Abstract]
Unpaid Principal Balance	282		282		290
Recorder Investment - Without Allowance	282		282		290
Recorder Investment - With Allowance	0		0		0
Total Recorded Investment	282		282		290
Related Allowance	0		0		0
Average Recorded Investment	403		366
Interest Income Recognized	0	0	8	0
Other consumer
Impaired Loans [Abstract]
Unpaid Principal Balance	136		136		143
Recorder Investment - Without Allowance	0		0		0
Recorder Investment - With Allowance	136		136		143
Total Recorded Investment	136		136		143
Related Allowance	49		49		$ 54
Average Recorded Investment	138	158	139	163
Interest Income Recognized	$ 2	$ 5	$ 4	$ 8

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

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