Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non purchased loans and leases $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2018 USD ($) loan
Restructured loans
Number of Loans \| loan	1	6	5
Pre- Modification Outstanding Recorded Investment	$ 16	$ 508	$ 708
Post- Modification Outstanding Recorded Investment	$ 16	$ 505	$ 703
Commercial
Restructured loans
Number of Loans \| loan		2
Pre- Modification Outstanding Recorded Investment		$ 187
Post- Modification Outstanding Recorded Investment		$ 185
Real estate – 1-4 family mortgage
Restructured loans
Number of Loans \| loan	1	4	4
Pre- Modification Outstanding Recorded Investment	$ 16	$ 321	$ 625
Post- Modification Outstanding Recorded Investment	$ 16	$ 320	$ 625
Real estate – commercial mortgage
Restructured loans
Number of Loans \| loan			1
Pre- Modification Outstanding Recorded Investment			$ 83
Post- Modification Outstanding Recorded Investment			$ 78

Troubled Debt Restructuring Financing Receivable Modifications [Abstract]

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

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