Affordable Housing Projects Tax Credit Partnership (Details Textual) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Other Assets [Member]
Investments in Affordable Housing Projects [Abstract]
Amortization Method Qualified Affordable Housing Project Investments	$ 11.0	$ 11.3
Other Liabilities [Member]
Investments in Affordable Housing Projects [Abstract]
Qualified Affordable Housing Project Investments, Commitment	$ 6.3	$ 6.9

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 740
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=114775393&loc=SL49122993-202985

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