Trust Preferred Securities And Deferral Of Interest Payments (Details) $ in Thousands			6 Months Ended	12 Months Ended
	Jul. 02, 2015 USD ($)	Dec. 10, 2014 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2006 item	Sep. 27, 2006 USD ($)	Jul. 07, 2004 USD ($)
Debt Instrument [Line Items]
Number of branch banks acquired | item					2
Securities Maturity			30 years
Minimum redemption period			5 years
Maximum interest and penalty payment deferral period			60 months
Deferral period for dividends on trust preferred securities			60 months
Payment of trust preferred securities dividends in arrears		$ 2,500
Interest in arrears				$ 0
Payment of interest on trust preferred securities			$ 107
Subsequent Event [Member]
Debt Instrument [Line Items]
Payment of interest on trust preferred securities	$ 109
NPB Capital Trust 1 [Member]
Debt Instrument [Line Items]
Issuance of floating rate trust preferred securities							$ 11,300
Interest rate terms, spread over reference rate			2.60%
Interest rate			2.88%
NPB Capital Trust 2 [Member]
Debt Instrument [Line Items]
Issuance of floating rate trust preferred securities						$ 5,200
Interest rate terms, spread over reference rate			1.77%
Interest rate			2.05%