Loans - Aging of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	$ 1,630,790	$ 1,469,783
31-60 Days Past Due	3,412	13,436
61-89 Days Past Due	1,213	583
90 Days Or More Past Due	18,763	25,584
Total Past Due	23,388	39,603
Current	1,607,402	1,430,180
Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	168,371	181,541
31-60 Days Past Due		472
61-89 Days Past Due	158
90 Days Or More Past Due	704	9,464
Total Past Due	862	9,936
Current	167,509	171,605
Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	425,105	369,245
31-60 Days Past Due	200	802
61-89 Days Past Due
90 Days Or More Past Due	2,861	2,717
Total Past Due	3,061	3,519
Current	422,044	365,726
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	47,039	40,708
31-60 Days Past Due		1,421
61-89 Days Past Due
90 Days Or More Past Due	879
Total Past Due	879	1,421
Current	46,160	39,287
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	41,272	34,019
31-60 Days Past Due	1	455
61-89 Days Past Due
90 Days Or More Past Due		2,242
Total Past Due	1	2,697
Current	41,271	31,322
Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	226,898	196,199
31-60 Days Past Due
61-89 Days Past Due
90 Days Or More Past Due
Total Past Due
Current	226,898	196,199
1-4 family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	320,641	215,771
31-60 Days Past Due	1,012	4,506
61-89 Days Past Due	190	91
90 Days Or More Past Due	11,841	8,470
Total Past Due	13,043	13,067
Current	307,598	202,704
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	112,358	110,003
31-60 Days Past Due	408	3,411
61-89 Days Past Due	540	321
90 Days Or More Past Due	1,113	1,212
Total Past Due	2,061	4,944
Current	110,297	105,059
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	258,578	288,809
31-60 Days Past Due	1,606	1,938
61-89 Days Past Due	321	170
90 Days Or More Past Due	1,365	1,479
Total Past Due	3,292	3,587
Current	255,286	285,222
Lease Financing & Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	29,626	32,104
31-60 Days Past Due	185	431
61-89 Days Past Due	4	1
90 Days Or More Past Due
Total Past Due	189	432
Current	29,437	31,672
Overdrafts [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Net, Total	902	1,384
31-60 Days Past Due
61-89 Days Past Due
90 Days Or More Past Due
Total Past Due
Current	$ 902	$ 1,384