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, 2018 loan	Sep. 30, 2017 USD ($) loan	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan
Restructured loans
Number of Loans \| loan	0	5	5	13
Pre- Modification Outstanding Recorded Investment		$ 537	$ 708	$ 1,298
Post- Modification Outstanding Recorded Investment		$ 482	$ 703	$ 922
Real estate – 1-4 family mortgage
Restructured loans
Number of Loans \| loan		4	4	9
Pre- Modification Outstanding Recorded Investment		$ 307	$ 625	$ 611
Post- Modification Outstanding Recorded Investment		$ 307	$ 625	$ 601
Real estate – commercial mortgage
Restructured loans
Number of Loans \| loan		1	1	3
Pre- Modification Outstanding Recorded Investment		$ 230	$ 83	$ 683
Post- Modification Outstanding Recorded Investment		$ 175	$ 78	$ 318
Installment loans to individuals
Restructured loans
Number of Loans \| loan				1
Pre- Modification Outstanding Recorded Investment				$ 4
Post- Modification Outstanding Recorded Investment				$ 3

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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