LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Summary (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	$ 22,542	$ 20,345	$ 20,509	$ 19,765
Provision for loan losses	684	1,238	3,266	1,791
Charge-offs	(937)	(662)	(2,436)	(1,532)
Recoveries	472	250	1,422	1,147
Allowance for loan losses at end of period	22,761	21,171	22,761	21,171
Commercial and industrial
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	5,187	4,927	3,748	5,411
Provision for loan losses	(915)	220	700	(213)
Charge-offs	(32)	(43)	(315)	(178)
Recoveries	313	30	420	114
Allowance for loan losses at end of period	4,553	5,134	4,553	5,134
Agricultural and farmland
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	2,862	2,375	2,650	2,385
Provision for loan losses	(133)	319	109	309
Charge-offs			(30)
Allowance for loan losses at end of period	2,729	2,694	2,729	2,694
Commercial real estate - owner occupied
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	2,487	1,616	2,506	1,510
Provision for loan losses	(482)	47	(356)	149
Charge-offs	(216)	(44)	(382)	(46)
Recoveries	26	45	47	51
Allowance for loan losses at end of period	1,815	1,664	1,815	1,664
Commercial real estate - non-owner occupied
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	2,721	2,930	2,644	2,476
Provision for loan losses	521	(36)	588	356
Charge-offs	(111)		(111)	(69)
Recoveries	5	5	15	136
Allowance for loan losses at end of period	3,136	2,899	3,136	2,899
Multi-family
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	1,153	920	912	997
Provision for loan losses	(182)	(13)	59	(90)
Charge-offs	(41)		(41)
Allowance for loan losses at end of period	930	907	930	907
Construction and land development
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	3,723	3,345	4,176	2,981
Provision for loan losses	(601)	365	(1,478)	528
Charge-offs			(9)	(53)
Recoveries	1	2	434	256
Allowance for loan losses at end of period	3,123	3,712	3,123	3,712
One-to-four family residential
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	3,569	3,062	2,782	2,723
Provision for loan losses	(692)	213	541	553
Charge-offs	(387)	(439)	(1,026)	(727)
Recoveries	42	109	235	396
Allowance for loan losses at end of period	2,532	2,945	2,532	2,945
Municipal, consumer, and other
Activity in the allowance for loan losses
Allowance for loan losses at beginning of period	840	1,170	1,091	1,282
Provision for loan losses	3,168	123	3,103	199
Charge-offs	(150)	(136)	(522)	(459)
Recoveries	85	59	271	194
Allowance for loan losses at end of period	$ 3,943	$ 1,216	$ 3,943	$ 1,216

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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- Definition

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 of expense related to estimated loss from loan and lease transactions.

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