Goodwill, Intangible and Other Assets - Intangible Assets And Other Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Assets [Line Items]
Goodwill	$ 22,334	$ 7,525
Core deposit intangible	663	214
Trade name intangible	950	0
NBG customer relationships	88	203
Intangible Assets Total	24,035	7,942
Other Assets Total	55,399	40,666
Investment in Low Income Housing Partnerships
Other Assets [Line Items]
Other Assets Total	22,862	15,681
Deferred taxes, net
Other Assets [Line Items]
Other Assets Total	10,087	8,776
Bank owned life insurance
Other Assets [Line Items]
Other Assets Total	7,375	2,678
Investment in Homestate Mortgage
Other Assets [Line Items]
Other Assets Total	3,034	0
Prepaid expenses
Other Assets [Line Items]
Other Assets Total	2,217	1,393
Investment in PWA
Other Assets [Line Items]
Other Assets Total	1,511	1,484
Secondary markets
Other Assets [Line Items]
Other Assets Total	1,424	0
Taxes receivable
Other Assets [Line Items]
Other Assets Total	1,220	1,526
Mortgage servicing rights
Other Assets [Line Items]
Other Assets Total	1,010	0
Rate lock derivative
Other Assets [Line Items]
Other Assets Total	841	0
Investment in ECCM
Other Assets [Line Items]
Other Assets Total	176	74
Note receivable from ECCM
Other Assets [Line Items]
Other Assets Total	100	339
Investment in ECIA
Other Assets [Line Items]
Other Assets Total	46	61
Investment in RML Holding Company
Other Assets [Line Items]
Other Assets Total	0	5,953
Other Assets
Other Assets [Line Items]
Other Assets Total	$ 3,496	$ 2,701