Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Purchased loans $ in Thousands	3 Months Ended
Mar. 31, 2019 loan	Mar. 31, 2018 USD ($) loan
Restructured loans
Number of Loans \| loan	0	2
Pre- Modification Outstanding Recorded Investment		$ 56
Post- Modification Outstanding Recorded Investment		$ 51
Commercial, financial, agricultural
Restructured loans
Number of Loans \| loan		1
Pre- Modification Outstanding Recorded Investment		$ 48
Post- Modification Outstanding Recorded Investment		$ 44
Real estate – commercial mortgage
Restructured loans
Number of Loans \| loan		1
Pre- Modification Outstanding Recorded Investment		$ 8
Post- Modification Outstanding Recorded Investment		$ 7

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.

+ References

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

+ References

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