Derivative Financial Instruments (Details 5) - U.S. Treasury and Federal agencies securities - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	$ 165,320	$ 128,880
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	1,400	1,780
Greater than 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	$ 300	$ 0

Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial asset at a date certain for a specified price. Includes repurchase-to-maturity transactions and liabilities not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 7
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=64858031&loc=SL34722452-111729

Name:	us-gaap_FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant