Dividend Restrictions (Details Textual) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
Equity [Abstract]
Payment of dividends	$ 6.7
Dividend restriction description	Under the Ohio Banking Code, cash dividends may not exceed net profits as defined for that year combined with retained net profits for the two preceding years less any required transfers to surplus. Under this formula, the amount available for payment of dividends in 2018 is $6.7 million plus 2018 profits retained up to the date of the dividend declaration.

Amount of dividends that can be declared or paid with approval of regulatory agency.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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