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Allowance for Losses on Loans - Internally Assigned Grade (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross $ 8,669,717 $ 7,990,545
Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,572,244 5,373,950
Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 140,060 130,778
Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 385,824 302,722
Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 80,359 81,660
Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 111,130 124,984
Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 920,285 835,598
Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 752,957 625,293
Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 434,088 326,450
HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 134,455 133,631
Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 138,315 55,479
Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 8,409,022 7,641,266
Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,560,203 5,359,149
Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 140,060 130,778
Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 385,824 302,722
Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 77,832 77,775
Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 108,623 121,671
Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 917,286 831,684
Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 591,336 414,961
Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 379,226 243,199
Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 116,042 112,186
Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 132,590 47,141
Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 184,188 250,379
Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 11,716 14,468
Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 905 1,489
Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,507 3,313
Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,999 3,914
Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 97,898 133,423
Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 54,219 75,326
Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 8,274 10,179
Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,670 8,267
Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 76,507 98,900
Credit-impaired acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 325 333
Credit-impaired acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Credit-impaired acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Credit-impaired acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 1,622 2,396
Credit-impaired acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Credit-impaired acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Credit-impaired acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 63,723 76,909
Credit-impaired acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 643 7,925
Credit-impaired acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 10,139 11,266
Credit-impaired acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 55 71
Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 1,622 2,396
Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 325 333
Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 10,194 11,337
Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 63,723 76,909
Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 643 7,925
Pass
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 8,423,666 7,639,717
Grade as percentage of total gross assets 97.20% 95.60%
Pass | Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 8,205,380 7,363,923
Pass | Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,426,895 5,184,101
Pass | Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 134,950 99,436
Pass | Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 385,824 302,722
Pass | Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 71,692 64,355
Pass | Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 108,013 121,039
Pass | Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 912,728 819,911
Pass | Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 557,914 373,012
Pass | Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 359,221 240,441
Pass | Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 115,794 112,186
Pass | Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 132,349 46,720
Pass | Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 156,954 209,754
Pass | Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 11,716 14,468
Pass | Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Pass | Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Pass | Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 503 312
Pass | Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,507 3,313
Pass | Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,999 3,227
Pass | Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 88,974 105,055
Pass | Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 36,311 64,933
Pass | Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 8,274 10,179
Pass | Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,670 8,267
Pass | Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 61,332 66,040
Pass | Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 1,292 980
Pass | Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 325 333
Pass | Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Pass | Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 10,194 11,337
Pass | Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 48,878 52,509
Pass | Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 643 881
Special mention
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 37,860 42,499
Grade as percentage of total gross assets 0.40% 0.50%
Special mention | Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 19,504 33,384
Special mention | Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,793 4,595
Special mention | Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 3,199
Special mention | Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 775
Special mention | Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 2,114
Special mention | Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 1,971 21,652
Special mention | Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 14,740 1,049
Special mention | Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 16,213 5,499
Special mention | Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,571 4,190
Special mention | Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 13,642 1,309
Special mention | Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,143 3,616
Special mention | Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 461
Special mention | Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Special mention | Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 2,143 3,155
Special mention | Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 208,133 308,329
Grade as percentage of total gross assets 2.40% 3.90%
Substandard | Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 184,138 243,959
Substandard | Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 130,515 170,453
Substandard | Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,110 28,143
Substandard | Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 6,140 12,645
Substandard | Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 610 632
Substandard | Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 4,558 9,659
Substandard | Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 31,451 20,297
Substandard | Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 5,265 1,709
Substandard | Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 248 0
Substandard | Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 241 421
Substandard | Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 10,963 35,126
Substandard | Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 402 1,177
Substandard | Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 687
Substandard | Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 6,353 24,178
Substandard | Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 4,208 9,084
Substandard | Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 13,032 29,244
Substandard | Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 330 955
Substandard | Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Substandard | Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 12,702 21,245
Substandard | Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 7,044
Doubtful
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 58 0
Grade as percentage of total gross assets 0.00% 0.00%
Doubtful | Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 58 0
Doubtful | Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 58 0
Doubtful | Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Doubtful | Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Grade as percentage of total gross assets 0.00% 0.00%
Loss | Non-acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Non-acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Construction - speculative
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Construction - custom
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Land - acquisition & development
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Land - consumer lot loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | HELOC
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Acquired loans | Consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 1 - Construction and land A&D
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 2 - Single-family residential
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 3 - Multi-family
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 4 - HELOC & other consumer
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 5 - Commercial real estate
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross 0 0
Loss | Credit-impaired acquired loans | Pool 6 - Commercial & industrial
    
Financing Receivable, Recorded Investment [Line Items]    
Loans receivable, gross $ 0 $ 0