Loans - Loans by Class Modified as Troubled Debt Restructurings (Detail) (Troubled Debt Restructurings [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Security	Dec. 31, 2012 Security
Financing Receivable, Modifications [Line Items]
Number of Loans	11	2
Pre-Modification Outstanding Recorded Investment	$ 15,833	$ 14,674
Post-Modification Outstanding Recorded Investment	15,579	12,079
Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment
Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1
Pre-Modification Outstanding Recorded Investment	5,546
Post-Modification Outstanding Recorded Investment	5,546
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment
Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment
Multifamily [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans		1
Pre-Modification Outstanding Recorded Investment		2,159
Post-Modification Outstanding Recorded Investment		1,579
1-4 family [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	7
Pre-Modification Outstanding Recorded Investment	9,643
Post-Modification Outstanding Recorded Investment	9,419
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	1	1
Pre-Modification Outstanding Recorded Investment	75	12,515
Post-Modification Outstanding Recorded Investment	75	10,500
Commercial & Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	2
Pre-Modification Outstanding Recorded Investment	569
Post-Modification Outstanding Recorded Investment	538
Lease Financing & Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment
Overdrafts [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans
Pre-Modification Outstanding Recorded Investment
Post-Modification Outstanding Recorded Investment