Loans and Allowance - Subsequent Default (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1	4	1	6
Recorded Balance \| $	$ 85	$ 356	$ 85	$ 425
Commercial and farmland
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1	1	1	1
Recorded Balance \| $	$ 85	$ 262	$ 85	$ 262
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan		2		4
Recorded Balance \| $		$ 83		$ 152
Individuals' loans for household and other personal expenditures
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan		1		1
Recorded Balance \| $		$ 11		$ 11

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No definition available.

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524

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- Definition

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524

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