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Loan Receivables and Allowance for Loan Losses - Summarizes Loans that were Modified in a Troubled Debt Restructuring (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Contract
Financing Receivable, Modifications [Line Items]  
Number of Relationships, Pre-Modification 2,000
Number of Relationships, Post-Modification 2,000
Pre-Modification Outstanding Recorded Investment $ 2,439
Post-Modification Outstanding Recorded Investment 2,430
Construction to Permanent [Member]
  
Financing Receivable, Modifications [Line Items]  
Number of Relationships, Pre-Modification 2,000
Number of Relationships, Post-Modification 2,000
Pre-Modification Outstanding Recorded Investment 2,439
Post-Modification Outstanding Recorded Investment $ 2,430