Loans Receivable - Past Due Loans (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	$ 4,742	$ 8,326
Recorded Investment, 60 to 89 Days Past Due	4,687	3,507
Recorded Investment, 90 Days or Greater Past Due	10,660	14,545
Recorded Investment, Total Past Due	20,089	26,378
Recorded Investment, Loans Not Past Due	1,123,897	1,077,501
Recorded investment, total	1,143,986	1,103,879
Financing Receivable, Acquired with Deteriorated Credit Quality	212	1,756
Consumer Loan [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	3
Recorded Investment, 60 to 89 Days Past Due	3	4
Recorded Investment, 90 Days or Greater Past Due	1	4
Recorded Investment, Total Past Due	4	11
Recorded Investment, Loans Not Past Due	2,463	2,317
Recorded investment, total	2,467	2,328
Financing Receivable, Acquired with Deteriorated Credit Quality	0	0
Commercial Leases Lease Pools [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	7,344	3,011
Recorded investment, total	7,344	3,011
Commercial Leases Non Rated [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	28,321	23,175
Recorded investment, total	28,321	23,175
Commercial Leases Below Investment Grade [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	75	8
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	75	8
Recorded Investment, Loans Not Past Due	11,122	14,739
Recorded investment, total	11,197	14,747
Commercial Leases Investment Rated [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	124	0
Recorded Investment, 60 to 89 Days Past Due	488	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	612	0
Recorded Investment, Loans Not Past Due	157,107	147,374
Recorded investment, total	157,719	147,374
Commercial Loans Other [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	10,649	9,006
Recorded investment, total	10,649	9,006
Aviation (Member) [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, Loans Not Past Due	1,125	1,102
Recorded investment, total	1,125	1,102
Commercial Loans Health Care [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	20,654	19,381
Recorded investment, total	20,654	19,381
Commercial Loans Warehouse Lines [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	180	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	180	0
Recorded Investment, Loans Not Past Due	5,111	1,927
Recorded investment, total	5,291	1,927
Commercial Loans Municipal [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	2,228	2,849
Recorded investment, total	2,228	2,849
Commercial loans - unsecured [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	8	25
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	8	25
Recorded Investment, Loans Not Past Due	2,369	4,117
Recorded investment, total	2,377	4,142
Commercial loans - Secured [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	77	9
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	77	9
Recorded Investment, Loans Not Past Due	11,679	15,971
Recorded investment, total	11,756	15,980
Land Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	128	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	120	382
Recorded Investment, Total Past Due	248	382
Recorded Investment, Loans Not Past Due	2,035	3,684
Recorded investment, total	2,283	4,066
Construction Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	73	2,486
Recorded investment, total	73	2,486
Commercial Real Estate [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	2,343	4,432
Recorded Investment, 60 to 89 Days Past Due	1,534	1,363
Recorded Investment, 90 Days or Greater Past Due	3,322	3,969
Recorded Investment, Total Past Due	7,199	9,764
Recorded Investment, Loans Not Past Due	234,294	249,194
Recorded investment, total	241,493	258,958
Financing Receivable, Acquired with Deteriorated Credit Quality	161	1,633
Wholesale Commercial Lending [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	114,506	78,531
Recorded investment, total	114,506	78,531
Multi Family Mortgage Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	2,193
Recorded Investment, 60 to 89 Days Past Due	1,873	1,716
Recorded Investment, 90 Days or Greater Past Due	3,787	6,354
Recorded Investment, Total Past Due	5,660	10,263
Recorded Investment, Loans Not Past Due	331,470	303,903
Recorded investment, total	337,130	314,166
Financing Receivable, Acquired with Deteriorated Credit Quality	0	0
One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	87	905
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	152	960
Recorded Investment, Total Past Due	239	1,865
Recorded Investment, Loans Not Past Due	50,518	52,676
Recorded investment, total	50,757	54,541
One to Four Family Residential Real Estate Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	1,900	751
Recorded Investment, 60 to 89 Days Past Due	609	424
Recorded Investment, 90 Days or Greater Past Due	3,278	2,876
Recorded Investment, Total Past Due	5,787	4,051
Recorded Investment, Loans Not Past Due	130,829	142,058
Recorded investment, total	136,616	146,109
Financing Receivable, Acquired with Deteriorated Credit Quality	$ 51	$ 100