Acquisitions (Details) - USD ($)			12 Months Ended
	Oct. 02, 2017	Jan. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Acquired intangibles			$ 1,593,000	$ 514,000
Acquired goodwill			480,000	$ 0
Third party insurance administration company
Business Acquisition [Line Items]
Consideration Transferred		$ 450,000
Acquired intangibles		450,000
Acquired goodwill		0
Consideration Transferred, Liabilities Incurred		$ 194,000
Property and casualty focused insurance agency
Business Acquisition [Line Items]
Consideration Transferred	$ 1,700,000
Acquired intangibles	1,100,000
Acquired goodwill	480,000
Consideration Transferred, Liabilities Incurred	856,000
Property plant and equipment acquired	$ 100,000
ASB Financial Corp.
Business Acquisition [Line Items]
Acquired Entity Total Assets			288,300,000
Acquired Entity Net Loans			247,200,000
Acquired Entity Total Deposits			$ 203,200,000
Common Shares Issued in Business Combination			0.592
Cash Consideration Per Share			$ 20.00
ASB Financial Corp. | Maximum | Cash [Member]
Business Acquisition [Line Items]
Consideration Transferred			$ 0.15