LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Risk-Rate and Non-Risk Rated Loans by Grade and Other Characteristic) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 295,393	$ 251,023
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	224,451	188,312
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	156,634	159,857
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	125,282	127,251
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	82,011	104,043
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	236,275	242,453
Financing Receivable, Revolving	11,782	3,528
Financing Receivable, before Allowance for Credit Loss	1,131,828	1,076,467
Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	427,033	257,365
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	224,303	276,673
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	269,994	319,804
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	241,086	254,328
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	231,208	304,105
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	578,366	523,347
Financing Receivable, Revolving	18,471	20,062
Financing Receivable, before Allowance for Credit Loss	1,990,461	1,955,684
Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	195,617	80,944
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	79,047	71,253
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	58,243	39,343
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	36,026	93,442
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	89,942	44,395
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	102,195	96,863
Financing Receivable, Revolving	3,030	1,983
Financing Receivable, before Allowance for Credit Loss	564,100	428,223
Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	115,134	96,419
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	31,926	76,923
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	9,479	46,172
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,893	6,038
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	2,256
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	98	1,129
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	169,530	228,937
Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	86,643	79,710
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	118,114	151,141
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	54,359	59,744
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	14,932
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	259,116	305,527
One-to four-family construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	526,153	463,358
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	40,133	36,241
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	331	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	216	0
Financing Receivable, Revolving	1,920	8,211
Financing Receivable, before Allowance for Credit Loss	568,753	507,810
Land and Land Improvements [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	184,257	156,464
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	89,909	37,427
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	17,417	19,607
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,141	6,991
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	4,050	6,264
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7,998	5,142
Financing Receivable, Revolving	1,682	17,020
Financing Receivable, before Allowance for Credit Loss	313,454	248,915
Commercial business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	275,102	1,250,003
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	217,099	245,670
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	178,428	221,620
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	125,305	71,577
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	46,328	40,077
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	78,736	66,774
Financing Receivable, Revolving	251,078	282,740
Financing Receivable, before Allowance for Credit Loss	1,172,076	2,178,461
Agricultural Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	34,573	33,574
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	25,812	64,710
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	52,182	32,457
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	27,894	23,608
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	13,202	23,069
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	32,680	28,536
Financing Receivable, Revolving	99,410	93,995
Financing Receivable, before Allowance for Credit Loss	285,753	299,949
Pass (Risk Ratings 1-5) [Member] \| Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	280,746	243,100
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	224,451	156,838
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	140,679	156,817
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	125,282	122,484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	80,955	92,312
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	205,594	212,792
Financing Receivable, Revolving	11,782	3,379
Financing Receivable, before Allowance for Credit Loss	1,069,489	987,722
Pass (Risk Ratings 1-5) [Member] \| Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	397,100	237,553
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	224,303	262,543
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	265,385	299,452
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	235,542	218,018
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	225,718	278,348
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	549,266	502,914
Financing Receivable, Revolving	18,471	20,062
Financing Receivable, before Allowance for Credit Loss	1,915,785	1,818,890
Pass (Risk Ratings 1-5) [Member] \| Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	190,709	78,632
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	79,047	69,825
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	58,243	39,343
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	36,026	93,442
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	89,942	44,395
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	100,653	96,863
Financing Receivable, Revolving	3,030	1,983
Financing Receivable, before Allowance for Credit Loss	557,650	424,483
Pass (Risk Ratings 1-5) [Member] \| Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	103,352	83,506
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	31,841	67,152
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	8,791	41,299
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,087	6,038
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	2,158
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	1,129
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	152,071	201,282
Pass (Risk Ratings 1-5) [Member] \| Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	86,643	79,710
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	118,114	151,141
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	54,359	59,744
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	14,932
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	259,116	305,527
Pass (Risk Ratings 1-5) [Member] \| One-to four-family construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	526,153	461,294
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	40,133	35,910
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	331	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	216	0
Financing Receivable, Revolving	1,920	7,581
Financing Receivable, before Allowance for Credit Loss	568,753	504,785
Pass (Risk Ratings 1-5) [Member] \| Land and Land Improvements [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	181,381	156,450
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	89,895	37,397
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	17,154	16,560
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,141	6,801
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	4,050	6,264
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7,870	4,840
Financing Receivable, Revolving	1,682	17,020
Financing Receivable, before Allowance for Credit Loss	310,173	245,332
Pass (Risk Ratings 1-5) [Member] \| Commercial business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	273,096	1,243,276
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	215,462	230,845
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	176,136	203,051
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	121,211	65,524
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	45,434	38,757
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	78,049	66,206
Financing Receivable, Revolving	246,351	264,741
Financing Receivable, before Allowance for Credit Loss	1,155,739	2,112,400
Pass (Risk Ratings 1-5) [Member] \| Agricultural Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	34,573	32,032
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	25,338	62,058
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	49,951	31,381
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	27,401	22,635
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	13,073	22,394
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	32,608	24,950
Financing Receivable, Revolving	99,410	91,660
Financing Receivable, before Allowance for Credit Loss	282,354	287,110
Special Mention [Member] \| Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,050	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	4,560
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,185	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	2,251
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	74	1,869
Financing Receivable, Revolving	0	149
Financing Receivable, before Allowance for Credit Loss	3,309	8,829
Special Mention [Member] \| Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	2,712
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	240	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	5,544	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	2,730
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	1,856
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	5,784	7,298
Special Mention [Member] \| Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Special Mention [Member] \| Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	5,963
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	5,963
Special Mention [Member] \| Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Special Mention [Member] \| One-to four-family construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,563
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	630
Financing Receivable, before Allowance for Credit Loss	0	2,193
Special Mention [Member] \| Land and Land Improvements [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Special Mention [Member] \| Commercial business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	65	103
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	77	412
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	241	829
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	19	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	8	115
Financing Receivable, Revolving	2,430	9,507
Financing Receivable, before Allowance for Credit Loss	2,840	10,966
Special Mention [Member] \| Agricultural Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	810
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	537
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	1,347
Substandard [Member] \| Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	13,597	7,923
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	26,914
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	13,770	3,040
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	2,516
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,056	11,731
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	30,607	27,792
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	59,030	79,916
Substandard [Member] \| Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	29,933	19,812
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	11,418
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4,369	20,352
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	36,310
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,490	23,027
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	29,100	18,577
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	68,892	129,496
Substandard [Member] \| Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,908	2,312
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	1,428
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,542	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	6,450	3,740
Substandard [Member] \| Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	11,782	12,913
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	85	3,808
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	688	4,873
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4,806	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	98
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	98	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	17,459	21,692
Substandard [Member] \| Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Substandard [Member] \| One-to four-family construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	501
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	331
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	832
Substandard [Member] \| Land and Land Improvements [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,876	14
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	14	30
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	263	3,047
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	190
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	128	302
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	3,281	3,583
Substandard [Member] \| Commercial business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,941	6,624
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,560	14,413
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,292	18,569
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,853	5,224
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	875	1,320
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	679	453
Financing Receivable, Revolving	2,297	8,492
Financing Receivable, before Allowance for Credit Loss	13,497	55,095
Substandard [Member] \| Agricultural Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,542
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	474	2,652
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,231	1,076
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	493	163
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	129	675
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	72	3,049
Financing Receivable, Revolving	0	2,335
Financing Receivable, before Allowance for Credit Loss	3,399	11,492
Doubtful [Member] \| Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| One-to four-family construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Land and Land Improvements [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Commercial business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Doubtful [Member] \| Agricultural Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Loss [Member] \| Owner-occupied Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Loss [Member] \| Commer[Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Loss [Member] \| Multifamily Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Loss [Member] \| Commercial Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0
Loss [Member] \| Multifamily construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss	0	0

LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Risk-Rate and Non-Risk Rated Loans by Grade and Other Characteristic) (Details) - USD ($)
$ in Thousands