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Borrowings - Schedule of Remaining Borrowing Capacity with FHLB (Parenthetical) (Detail) |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 Interest Rate 2.09% [Member] | Dec. 31, 2013 Interest Rate 4.60% [Member] | Dec. 31, 2012 Interest Rate 4.60% [Member] | Jun. 30, 2009 Interest Rate 4.60% [Member] | Dec. 31, 2013 Interest Rate 4.02% [Member] | Dec. 31, 2012 Interest Rate 4.02% [Member] | Feb. 29, 2008 Interest Rate 4.02% [Member] | Dec. 31, 2013 Interest Rate 4.10% [Member] | Dec. 31, 2012 Interest Rate 4.10% [Member] | Aug. 31, 2008 Interest Rate 4.10% [Member] | Dec. 31, 2013 Interest Rate 4.47% [Member] | Dec. 31, 2012 Interest Rate 4.47% [Member] | Aug. 31, 2010 Interest Rate 4.47% [Member] | Dec. 31, 2013 Interest Rate 3.97% [Member] | Dec. 31, 2012 Interest Rate 3.97% [Member] | Oct. 31, 2009 Interest Rate 3.97% [Member] | Dec. 31, 2012 Interest Rate 4.72% [Member] | Dec. 31, 2013 Interest Rate 4.31% [Member] | Dec. 31, 2013 Interest Rate 5.24% [Member] | Dec. 31, 2013 Interest Rate 3.35% [Member] | Dec. 31, 2013 Interest Rate 4.00% [Member] | Dec. 31, 2013 Interest Rate 3.23% [Member]
Borrowings Under Repurchase Agreements [Line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed rate on borrowings | 2.09% | 4.60% | 4.60% | 4.60% | 4.02% | 4.02% | 4.02% | 4.10% | 4.10% | 4.10% | 4.47% | 4.47% | 4.47% | 3.97% | 3.97% | 3.97% | 4.72% | 4.31% | 5.24% | 3.35% | 4.00% | 3.23%
FHLB advances, floating rate description |  | 3 month LIBOR + 0.16% |  |  | 3 month LIBOR + 0.11% |  |  | 3 month LIBOR + 0.11% |  |  | 3 month LIBOR + 0.11% |  |  | 3 month LIBOR + 0.10% |  |  |  |  |  |  |  |
FHLB advances, basis spread on floating rate |  | 0.16% |  |  | 0.11% |  |  | 0.11% |  |  | 0.11% |  |  | 0.10% |  |  |  |  |  |  |  |

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