Summary of Significant Accounting Policies (Goodwill and Intangible Assets) (Details) - USD ($)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Servicing rights, valuation allowance	$ 0	$ 0
Core Deposit Intangibles \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	8 years
Core Deposit Intangibles \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	18 years
Customer Relationship Intangible
Finite-Lived Intangible Assets [Line Items]
Useful life	22 years

Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(5)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746

Name:	us-gaap_ServicingAssetAtAmortizedValueValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration