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Loans - Schedule of Credit Quality Indicators of Loan Portfolio (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]    
Total loans $ 707,456,000 $ 673,128,000
Total loans 21,673,808 45,764,397
Total loans 707,456,117 673,128,334
Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 595,256,000 504,534,000
Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 90,526,000 122,830,000
Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 21,674,000 45,764,000
Total loans 21,674,000 45,764,000
One- to Four-Family First Mortgage [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 179,506,000 177,816,000
One- to Four-Family First Mortgage [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 138,071,000 116,742,000
One- to Four-Family First Mortgage [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 37,084,000 49,943,000
One- to Four-Family First Mortgage [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 4,351,000 11,131,000
Home Equity Loans and Lines [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 40,561,000 40,425,000
Home Equity Loans and Lines [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 30,425,000 26,993,000
Home Equity Loans and Lines [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 7,798,000 10,123,000
Home Equity Loans and Lines [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,338,000 3,309,000
Commercial Real Estate [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 269,849,000 252,805,000
Commercial Real Estate [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 225,716,000 185,804,000
Commercial Real Estate [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 32,945,000 44,132,000
Commercial Real Estate [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 11,188,000 22,869,000
Construction and Land [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 83,271,000 75,529,000
Construction and Land [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 79,771,000 66,875,000
Construction and Land [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,096,000 3,650,000
Construction and Land [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,404,000 5,004,000
Multi-Family Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 16,578,000 19,659,000
Multi-Family Residential [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 7,778,000 8,458,000
Multi-Family Residential [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 7,678,000 9,818,000
Multi-Family Residential [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,122,000 1,383,000
Commercial and Industrial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 77,533,000 72,253,000
Commercial and Industrial [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 73,834,000 66,321,000
Commercial and Industrial [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,428,000 4,469,000
Commercial and Industrial [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,271,000 1,463,000
Consumer [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 40,158,000 34,641,000
Consumer [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 39,661,000 33,341,000
Consumer [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 497,000 695,000
Consumer [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    605,000
Pass [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 669,870,000 632,292,000
Pass [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 574,821,000 487,870,000
Pass [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 78,251,000 107,159,000
Pass [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 16,798,000 37,263,000
Pass [Member] | One- to Four-Family First Mortgage [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 170,849,000 166,506,000
Pass [Member] | One- to Four-Family First Mortgage [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 136,274,000 114,278,000
Pass [Member] | One- to Four-Family First Mortgage [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 31,467,000 43,673,000
Pass [Member] | One- to Four-Family First Mortgage [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 3,108,000 8,555,000
Pass [Member] | Home Equity Loans and Lines [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 39,272,000 39,419,000
Pass [Member] | Home Equity Loans and Lines [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 29,962,000 26,870,000
Pass [Member] | Home Equity Loans and Lines [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 7,226,000 9,402,000
Pass [Member] | Home Equity Loans and Lines [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,084,000 3,147,000
Pass [Member] | Commercial Real Estate [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 258,673,000 234,110,000
Pass [Member] | Commercial Real Estate [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 218,779,000 176,410,000
Pass [Member] | Commercial Real Estate [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 30,192,000 37,137,000
Pass [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 9,702,000 20,563,000
Pass [Member] | Construction and Land [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 80,588,000 72,945,000
Pass [Member] | Construction and Land [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 78,297,000 66,441,000
Pass [Member] | Construction and Land [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,044,000 3,072,000
Pass [Member] | Construction and Land [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,247,000 3,432,000
Pass [Member] | Multi-Family Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 12,505,000 16,210,000
Pass [Member] | Multi-Family Residential [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 6,902,000 7,030,000
Pass [Member] | Multi-Family Residential [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 5,397,000 8,756,000
Pass [Member] | Multi-Family Residential [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 206,000 424,000
Pass [Member] | Commercial and Industrial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 68,150,000 68,562,000
Pass [Member] | Commercial and Industrial [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 65,271,000 63,561,000
Pass [Member] | Commercial and Industrial [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,428,000 4,424,000
Pass [Member] | Commercial and Industrial [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 451,000 577,000
Pass [Member] | Consumer [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 39,833,000 34,540,000
Pass [Member] | Consumer [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 39,336,000 33,280,000
Pass [Member] | Consumer [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 497,000 695,000
Pass [Member] | Consumer [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    565,000
Special Mention [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 8,723,000 12,972,000
Special Mention [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 6,967,000 9,513,000
Special Mention [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 350,000 2,186,000
Special Mention [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,406,000 1,273,000
Special Mention [Member] | One- to Four-Family First Mortgage [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 535,000 1,896,000
Special Mention [Member] | One- to Four-Family First Mortgage [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 265,000 690,000
Special Mention [Member] | One- to Four-Family First Mortgage [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 119,000 952,000
Special Mention [Member] | One- to Four-Family First Mortgage [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 151,000 254,000
Special Mention [Member] | Home Equity Loans and Lines [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 368,000 166,000
Special Mention [Member] | Home Equity Loans and Lines [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 149,000 56,000
Special Mention [Member] | Home Equity Loans and Lines [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 198,000 82,000
Special Mention [Member] | Home Equity Loans and Lines [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 21,000 28,000
Special Mention [Member] | Commercial Real Estate [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,049,000 5,733,000
Special Mention [Member] | Commercial Real Estate [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 800,000 4,951,000
Special Mention [Member] | Commercial Real Estate [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    782,000
Special Mention [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 249,000   
Special Mention [Member] | Construction and Land [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 211,000 377,000
Special Mention [Member] | Construction and Land [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 147,000 267,000
Special Mention [Member] | Construction and Land [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    106,000
Special Mention [Member] | Construction and Land [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 64,000 4,000
Special Mention [Member] | Multi-Family Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,825,000 2,122,000
Special Mention [Member] | Multi-Family Residential [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 876,000 899,000
Special Mention [Member] | Multi-Family Residential [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 33,000 264,000
Special Mention [Member] | Multi-Family Residential [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 916,000 959,000
Special Mention [Member] | Commercial and Industrial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 4,687,000 2,595,000
Special Mention [Member] | Commercial and Industrial [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 4,682,000 2,590,000
Special Mention [Member] | Commercial and Industrial [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Special Mention [Member] | Commercial and Industrial [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 5,000 5,000
Special Mention [Member] | Consumer [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 48,000 83,000
Special Mention [Member] | Consumer [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 48,000 60,000
Special Mention [Member] | Consumer [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Special Mention [Member] | Consumer [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    23,000
Substandard [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 28,863,000 27,864,000
Substandard [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 13,468,000 7,151,000
Substandard [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 11,925,000 13,485,000
Substandard [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 3,470,000 7,228,000
Substandard [Member] | One- to Four-Family First Mortgage [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 8,122,000 9,414,000
Substandard [Member] | One- to Four-Family First Mortgage [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,532,000 1,774,000
Substandard [Member] | One- to Four-Family First Mortgage [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 5,498,000 5,318,000
Substandard [Member] | One- to Four-Family First Mortgage [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,092,000 2,322,000
Substandard [Member] | Home Equity Loans and Lines [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 921,000 840,000
Substandard [Member] | Home Equity Loans and Lines [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 314,000 67,000
Substandard [Member] | Home Equity Loans and Lines [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 374,000 639,000
Substandard [Member] | Home Equity Loans and Lines [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 233,000 134,000
Substandard [Member] | Commercial Real Estate [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 10,127,000 12,962,000
Substandard [Member] | Commercial Real Estate [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 6,137,000 4,443,000
Substandard [Member] | Commercial Real Estate [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,753,000 6,213,000
Substandard [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,237,000 2,306,000
Substandard [Member] | Construction and Land [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,472,000 2,207,000
Substandard [Member] | Construction and Land [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,327,000 167,000
Substandard [Member] | Construction and Land [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 1,052,000 472,000
Substandard [Member] | Construction and Land [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 93,000 1,568,000
Substandard [Member] | Multi-Family Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,248,000 1,327,000
Substandard [Member] | Multi-Family Residential [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    529,000
Substandard [Member] | Multi-Family Residential [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 2,248,000 798,000
Substandard [Member] | Multi-Family Residential [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Substandard [Member] | Commercial and Industrial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 4,696,000 1,096,000
Substandard [Member] | Commercial and Industrial [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 3,881,000 170,000
Substandard [Member] | Commercial and Industrial [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    45,000
Substandard [Member] | Commercial and Industrial [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 815,000 881,000
Substandard [Member] | Consumer [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 277,000 18,000
Substandard [Member] | Consumer [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans 277,000 1,000
Substandard [Member] | Consumer [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Substandard [Member] | Consumer [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans    17,000
Doubtful [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | One- to Four-Family First Mortgage [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | One- to Four-Family First Mortgage [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | One- to Four-Family First Mortgage [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | One- to Four-Family First Mortgage [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Home Equity Loans and Lines [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Home Equity Loans and Lines [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Home Equity Loans and Lines [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Home Equity Loans and Lines [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial Real Estate [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial Real Estate [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial Real Estate [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Construction and Land [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Construction and Land [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Construction and Land [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Construction and Land [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Multi-Family Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Multi-Family Residential [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Multi-Family Residential [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Multi-Family Residential [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial and Industrial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial and Industrial [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial and Industrial [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Commercial and Industrial [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Consumer [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Consumer [Member] | Originated Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Consumer [Member] | Non-Covered Acquired Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans      
Doubtful [Member] | Consumer [Member] | Covered Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total loans