Commitments and Contingent Liabilities - Narrative (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014 loan	Dec. 31, 2013	Dec. 31, 2012	Dec. 02, 2014
Loss Contingencies [Line Items]
Rental expense under leases for equipment and premises	$ 1,300,000	$ 667,000	$ 957,000
Rental income under leases	260,000	108,000	773,000
Limit on stop-loss insurance	1 year
Stop-loss insurance limit per covered individual per year	140,000
Loans repurchased in 2 year interval	20
Reserve for Unfunded Loan Commitments and Letters of Credit	112,000	96,000
Expenditure commitments due in 12 months	2,900,000
RML
Loss Contingencies [Line Items]
Contingent consideration term				5 years
Liability for future earn out payments	$ 7,300,000			$ 7,318,000