Loans, Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 33,760	$ 37,810
Charge-offs	(440)	(477)
Recoveries	371	433
Provision	4,649	(1,246)
Ending balance	38,340	36,520
Ending balance, individually evaluated for impairment	1,932	2,249
Ending balance, collectively evaluated for impairment	36,408	34,271
Loan [Abstract]
Total Loans Receivable	2,663,808	2,643,065	$ 2,639,104
Ending balance, individually evaluated for impairment	22,729	23,071
Ending balance, collectively evaluated for impairment	2,641,079	2,619,994
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,400	2,789
Charge-offs	(4)	0
Recoveries	10	10
Provision	354	(258)
Ending balance	2,760	2,541
Ending balance, individually evaluated for impairment	217	258
Ending balance, collectively evaluated for impairment	2,543	2,283
Loan [Abstract]
Total Loans Receivable	96,811	93,573	91,317
Ending balance, individually evaluated for impairment	1,884	2,740
Ending balance, collectively evaluated for impairment	94,927	90,833
Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	4,988	5,826
Charge-offs	(15)	(180)
Recoveries	108	184
Provision	1,599	174
Ending balance	6,680	6,004
Ending balance, individually evaluated for impairment	1,534	1,375
Ending balance, collectively evaluated for impairment	5,146	4,629
Loan [Abstract]
Total Loans Receivable	228,074	227,403	221,323
Ending balance, individually evaluated for impairment	3,853	4,039
Ending balance, collectively evaluated for impairment	224,221	223,364
Real Estate: Construction and land development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,599	3,292
Charge-offs	0	(8)
Recoveries	2	2
Provision	20	(358)
Ending balance	2,621	2,928
Ending balance, individually evaluated for impairment	0	0
Ending balance, collectively evaluated for impairment	2,621	2,928
Loan [Abstract]
Total Loans Receivable	186,265	179,334
Ending balance, individually evaluated for impairment	418	832
Ending balance, collectively evaluated for impairment	185,847	178,502
Real Estate: Mortgage, farmland [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,950	3,972
Charge-offs	0	0
Recoveries	0	5
Provision	146	(106)
Ending balance	4,096	3,871
Ending balance, individually evaluated for impairment	3	0
Ending balance, collectively evaluated for impairment	4,093	3,871
Loan [Abstract]
Total Loans Receivable	246,203	238,109	$ 242,730
Ending balance, individually evaluated for impairment	4,130	4,189
Ending balance, collectively evaluated for impairment	242,073	233,920
Real Estate: Mortgage, 1 to 4 family [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	10,638	12,516
Charge-offs	(229)	(177)
Recoveries	187	110
Provision	1,156	(819)
Ending balance	11,752	11,630
Ending balance, individually evaluated for impairment	176	74
Ending balance, collectively evaluated for impairment	11,576	11,556
Loan [Abstract]
Total Loans Receivable	1,054,395	1,068,591
Ending balance, individually evaluated for impairment	8,773	6,879
Ending balance, collectively evaluated for impairment	1,045,622	1,061,712
Real Estate: Mortgage, multi-family and commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	7,859	8,165
Charge-offs	(2)	(4)
Recoveries	14	85
Provision	1,192	(23)
Ending balance	9,063	8,223
Ending balance, individually evaluated for impairment	0	483
Ending balance, collectively evaluated for impairment	9,063	7,740
Loan [Abstract]
Total Loans Receivable	767,394	753,163
Ending balance, individually evaluated for impairment	3,669	4,333
Ending balance, collectively evaluated for impairment	763,725	748,830
Others [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,326	1,250
Charge-offs	(190)	(108)
Recoveries	50	37
Provision	182	144
Ending balance	1,368	1,323
Ending balance, individually evaluated for impairment	2	59
Ending balance, collectively evaluated for impairment	1,366	1,264
Loan [Abstract]
Total Loans Receivable	84,666	82,892
Ending balance, individually evaluated for impairment	2	59
Ending balance, collectively evaluated for impairment	$ 84,664	$ 82,833

Financing Receivable Allowance for Credit Losses of Loan [Abstract]

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

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

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- Definition

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

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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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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No definition available.

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Amount of direct write-downs of financing receivables charged against the allowance.

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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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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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-Publisher FASB
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