Loans - Schedule of Nonaccrual Loans by Classes of the Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchase credit impaired loans, net of unamortized fair value adjustments	$ 6,900
Total nonaccrual loans	4,499	$ 6,355
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual loans	1,046	1,499
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual loans	3,352	4,378
Commercial real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual loans	0	0
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccrual loans	$ 101	$ 478

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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+ References

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