Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Mortgage-backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities
Securities Financing Transaction [Line Items]
Mortgage backed securities and collateralized mortgage obligations of U.S. Government Sponsored Entities	$ 189,035	$ 216,094

Fair value of securities pledged as collateral against securities sold under agreement to repurchase.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226013-175313

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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