Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Nature of Banking Activities and Significant Accounting Policies - Principles of Consolidation Narrative (Details) $ in Thousands	Oct. 24, 2016	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	May 14, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Merger share distribution (in shares)	1.3314
Ownership interest in Southern Trust Mortgage				62.30%
Investment in subsidiaries		$ 155	$ 155