Commitments and Financial Instruments with Off-Balance-Sheet Risk (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Low income housing tax credit operating partnership investments	$ 9,900	$ 9,620
Low income housing tax credit liability for all legally binding unfunded commitments	$ 4,170	$ 3,640

Amount of commitment or contingent commitments to qualified affordable housing project investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64813897&loc=SL49122993-202985

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