Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Financial Instruments with Off Balance Sheet Risk

(Dollars in thousands)	Sep 30, 2015		Dec 31, 2014
Financial instruments whose contract amounts represent credit risk:
Commitments to extend credit:
Commercial loans		$349,044		$325,402
Home equity lines	211,566		200,932
Other loans	46,026		48,551
Standby letters of credit	6,214		5,102
Financial instruments whose notional amounts exceed the amount of credit risk:
Forward loan commitments:
Interest rate lock commitments	72,788		40,015
Commitments to sell mortgage loans	103,807		84,808
Customer related derivative contracts:
Interest rate swaps with customers	272,565		165,795
Mirror swaps with counterparties	272,565		165,795
Risk participation-in agreements	7,999		—
Interest rate risk management contracts:
Interest rate swaps	14,433		22,681