Business Combinations - Schedule of Loans Acquired in Business Combination (Details) - ColoEast Bankshares, Inc. $ in Thousands	Aug. 01, 2016 USD ($)
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period [Line Items]
Fair value at acquisition	$ 460,775
Non-Purchase Credit Impaired Loans
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest payments	530,404
Contractual cash flows not expected to be collected	21,272
Fair value at acquisition	441,482
Purchased Credit Impaired Loans
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest payments	25,124
Contractual cash flows not expected to be collected (nonaccretable difference)	1,707
Expected cash flows at acquisition	23,417
Interest component of expected cash flows (accretable difference)	4,124
Fair value at acquisition	$ 19,293

Contractual cash flows not expected to be collected.

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- Definition

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans with deteriorating 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.

+ References

No definition available.

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- Definition

The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating 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.

+ References

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- Definition

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: 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=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

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)(3)
-URI http://asc.fasb.org/extlink&oid=6379141&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=27045933&loc=d3e13503-111538

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- Definition

Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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