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Acquisition of Delaware Bancshares, Inc. (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended
	Jul. 31, 2016	Oct. 31, 2010	Jun. 30, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Assets			$ 767,829	$ 750,505
Deposits, total			584,259	550,909
Stockholders' equity			104,591	$ 100,998
Delaware Bancshares, Inc. Acquisition [Member] | Delaware Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Assets			378,300
Deposits, total			327,500
Stockholders' equity			$ 24,100
Proceeds from Issuance of Trust Preferred Securities		$ 8,000
Delaware Bancshares, Inc. Acquisition [Member] | Delaware Bancshares, Inc. [Member] | London Interbank Offered Rate (LIBOR) [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.40%
Delaware Bancshares, Inc. Acquisition [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 3,859
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	431,605
Business Acquisition, Share Price	$ 16.68
Business Acquisition, shares exchanged	0.6221

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

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