LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Recorded investments in loans and the allowance for loan losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	$ 2,026,332	$ 2,051,802
Individually evaluated for impairment, Loans	65,239	69,351
Total	2,132,952	2,163,826
Collectively evaluated for impairment, Allowance for loan losses	18,725	15,496
Individually evaluated for impairment, Allowance for loan losses	6,755	6,180
Total investments in loans	26,087	22,299	$ 21,013	$ 20,509
Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	41,381	42,673
Individually evaluated for impairment, Allowance for loan losses	607	623
Commercial and industrial
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	287,998	294,006
Individually evaluated for impairment, Loans	9,122	10,733
Total	299,266	307,175
Collectively evaluated for impairment, Allowance for loan losses	2,260	1,926
Individually evaluated for impairment, Allowance for loan losses	1,859	2,170
Total investments in loans	4,224	4,441	3,762	3,748
Commercial and industrial \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	2,146	2,436
Individually evaluated for impairment, Allowance for loan losses	105	345
Agricultural and farmland
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	214,328	192,722
Individually evaluated for impairment, Loans	13,303	13,966
Total	228,701	207,776
Collectively evaluated for impairment, Allowance for loan losses	2,832	2,576
Individually evaluated for impairment, Allowance for loan losses	90	105
Total investments in loans	2,993	2,766	3,248	2,650
Agricultural and farmland \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	1,070	1,088
Individually evaluated for impairment, Allowance for loan losses	71	85
Commercial real estate - owner occupied
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	210,206	211,744
Individually evaluated for impairment, Loans	11,171	10,927
Total	229,608	231,162
Collectively evaluated for impairment, Allowance for loan losses	1,618	1,486
Individually evaluated for impairment, Allowance for loan losses	261	270
Total investments in loans	2,122	1,779	2,353	2,506
Commercial real estate - owner occupied \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	8,231	8,491
Individually evaluated for impairment, Allowance for loan losses	243	23
Commercial real estate - non-owner occupied
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	522,305	561,277
Individually evaluated for impairment, Loans	3,367	3,398
Total	540,515	579,757
Collectively evaluated for impairment, Allowance for loan losses	4,354	3,591
Individually evaluated for impairment, Allowance for loan losses	68	70
Total investments in loans	4,432	3,663	2,722	2,644
Commercial real estate - non-owner occupied \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	14,843	15,082
Individually evaluated for impairment, Allowance for loan losses	10	2
Multi-family
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	175,874	176,273
Individually evaluated for impairment, Loans		1,324
Total	177,172	179,073
Collectively evaluated for impairment, Allowance for loan losses	1,467	1,019
Total investments in loans	1,474	1,024	972	912
Multi-family \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	1,298	1,476
Individually evaluated for impairment, Allowance for loan losses	7	5
Construction and land development
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	225,768	217,708
Individually evaluated for impairment, Loans	3,120	3,782
Total	232,311	224,887
Collectively evaluated for impairment, Allowance for loan losses	2,771	2,283
Individually evaluated for impairment, Allowance for loan losses	323	567
Total investments in loans	3,223	2,977	3,897	4,176
Construction and land development \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	3,423	3,397
Individually evaluated for impairment, Allowance for loan losses	129	127
One-to-four family residential
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	292,250	291,624
Individually evaluated for impairment, Loans	11,394	11,349
Total	313,925	313,580
Collectively evaluated for impairment, Allowance for loan losses	2,524	1,684
Individually evaluated for impairment, Allowance for loan losses	719	822
Total investments in loans	3,284	2,540	3,067	2,782
One-to-four family residential \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	10,281	10,607
Individually evaluated for impairment, Allowance for loan losses	41	34
Municipal, consumer, and other
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Collectively evaluated for impairment, Loans	97,603	106,448
Individually evaluated for impairment, Loans	13,762	13,872
Total	111,454	120,416
Collectively evaluated for impairment, Allowance for loan losses	899	931
Individually evaluated for impairment, Allowance for loan losses	3,435	2,176
Total investments in loans	4,335	3,109	$ 992	$ 1,091
Municipal, consumer, and other \| Loans acquired with deteriorated credit quality
LOANS AND THE ALLOWANCE FOR LOAN LOSSES
Total	89	96
Individually evaluated for impairment, Allowance for loan losses	$ 1	$ 2

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Topic 310
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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