Subsequent Event (Details Textual) - Former Executive - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
Apr. 30, 2018	Jun. 30, 2018
Scenario Forecast \| Noninterest Income
Subsequent Event [Line Items]
Gain recognized upon death of former executive, per share		$ 0.34
Subsequent Event
Subsequent Event [Line Items]
Gain recognized upon death of former executive	$ 1.5

Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355

Name:	us-gaap_InsuredEventGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration