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Commitments and Contingencies - Summary of Outstanding Commitments to Originate Loans and to Advance Additional Amounts (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Standby Letters of Credit [Member] |  |
Other Commitments [Line Items] |  |
Contract Amount | $ 1,253 | $ 2,907
Available Portion of Lines of Credit [Member] |  |
Other Commitments [Line Items] |  |
Contract Amount | 60,755 | 59,124
Undisbursed Portion of Loans in Process [Member] |  |
Other Commitments [Line Items] |  |
Contract Amount | 72,333 | 47,678
Commitments to Originate Loans [Member] |  |
Other Commitments [Line Items] |  |
Contract Amount | $ 48,854 | $ 77,857

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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration