Loans Receivable and Allowance for Loan Losses - Schedule of Troubled Debt Restructurings (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 SecurityLoan	Mar. 31, 2013 SecurityLoan
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	4	15
Pre-Modification Outstanding Recorded Investment	$ 875	$ 2,802
Post-Modification Outstanding Recorded Investment	835	2,882
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	0	1
Pre-Modification Outstanding Recorded Investment	0	329
Post-Modification Outstanding Recorded Investment	0	308
Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	4	16
Pre-Modification Outstanding Recorded Investment	875	3,131
Post-Modification Outstanding Recorded Investment	835	3,190
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	1	0
Pre-Modification Outstanding Recorded Investment	116	0
Post-Modification Outstanding Recorded Investment	28	0
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	0	3
Pre-Modification Outstanding Recorded Investment	0	240
Post-Modification Outstanding Recorded Investment	0	244
Total Restructured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	5	19
Pre-Modification Outstanding Recorded Investment	991	3,371
Post-Modification Outstanding Recorded Investment	$ 863	$ 3,434