Subsequent Event (Details) - MidSouth [Member] $ in Millions	Apr. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)
Subsequent Event [Line Items]
Assets		$ 1,700
Loans		900
Deposits		$ 1,400
Subsequent Event [Member]
Subsequent Event [Line Items]
Fixed conversion ratio	0.2952
Business combination transaction value on an average of share price	$ 213

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits

No definition available.

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed loans.

+ References

No definition available.

+ Details

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- Definition

Business combination transaction value on average of share price.

+ References

No definition available.

+ Details

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- Definition

Amount of assets acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

+ Details

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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