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Loans - PCI Loan Pools (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
90 Days or More Past Due and Accruing $ 173 $ 60
Nonperforming Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 5,459 7,321
90 Days or More Past Due and Accruing 173 60
Total Non-Performing Loans 5,632 7,381
Nonperforming Receivable | Loans Held For Investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3,763 6,571
90 Days or More Past Due and Accruing 94 52
Total Non-Performing Loans 3,857 6,623
Nonperforming Receivable | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   5,223
90 Days or More Past Due and Accruing   0
Total Non-Performing Loans   5,223
Nonperforming Receivable | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3,071  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 3,071  
Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 536 1,209
90 Days or More Past Due and Accruing 47 52
Total Non-Performing Loans 583 1,261
Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 536 1,209
90 Days or More Past Due and Accruing 7 9
Total Non-Performing Loans 543 1,218
Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
90 Days or More Past Due and Accruing   43
Total Non-Performing Loans   43
Nonperforming Receivable | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   43
90 Days or More Past Due and Accruing   0
Total Non-Performing Loans   43
Nonperforming Receivable | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 84 96
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 84 96
Nonperforming Receivable | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 72  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 72  
Nonperforming Receivable | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due and Accruing 47 0
Total Non-Performing Loans 47 0
Nonperforming Receivable | Loans acquired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,696 750
90 Days or More Past Due and Accruing 79 8
Total Non-Performing Loans 1,775 758
Nonperforming Receivable | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,045 290
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 1,045 290
Nonperforming Receivable | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 202 420
90 Days or More Past Due and Accruing 27 0
Total Non-Performing Loans 229 420
Nonperforming Receivable | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 418  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 418  
Nonperforming Receivable | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 28 31
90 Days or More Past Due and Accruing 52 8
Total Non-Performing Loans 80 39
Nonperforming Receivable | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3 9
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 3 9
Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   5,223
90 Days or More Past Due and Accruing   0
Total Non-Performing Loans   5,223
Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3,071  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 3,071  
Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 536 1,209
90 Days or More Past Due and Accruing 7 9
Total Non-Performing Loans 543 1,218
Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due and Accruing 40 43
Total Non-Performing Loans 40 43
Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   40
90 Days or More Past Due and Accruing   0
Total Non-Performing Loans   40
Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   3
90 Days or More Past Due and Accruing   0
Total Non-Performing Loans   3
Nonperforming Receivable | Substandard | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 84 96
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 84 96
Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 72  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 72  
Nonperforming Receivable | Substandard | Loans acquired | Commercial | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 212 231
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 212 231
Nonperforming Receivable | Substandard | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 833 59
90 Days or More Past Due and Accruing 0 0
Total Non-Performing Loans 833 59
Nonperforming Receivable | Substandard | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 202 420
90 Days or More Past Due and Accruing 27 0
Total Non-Performing Loans 229 420
Nonperforming Receivable | Substandard | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 418  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 418  
Nonperforming Receivable | Substandard | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 28  
90 Days or More Past Due and Accruing 52  
Total Non-Performing Loans 80  
Nonperforming Receivable | Substandard | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3  
90 Days or More Past Due and Accruing 0  
Total Non-Performing Loans 3  
Nonperforming Receivable | Pass | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due and Accruing 47 0
Total Non-Performing Loans 47 0
0-29 Days Past Due | Nonperforming Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,122 1,185
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,057 765
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   341
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 767  
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 206 384
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 206 384
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   40
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 84 0
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
0-29 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
0-29 Days Past Due | Nonperforming Receivable | Loans acquired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 65 420
0-29 Days Past Due | Nonperforming Receivable | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 37 0
0-29 Days Past Due | Nonperforming Receivable | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 420
0-29 Days Past Due | Nonperforming Receivable | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
0-29 Days Past Due | Nonperforming Receivable | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 28 0
0-29 Days Past Due | Nonperforming Receivable | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   341
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 767  
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 206 384
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   40
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 84 0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 37 0
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 420
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 28  
0-29 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
0-29 Days Past Due | Nonperforming Receivable | Pass | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,358 479
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 479
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 383
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 383
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 96
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable | Loans acquired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 1,358 0
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 738 0
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | One-to-four family residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 202  
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 418  
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 383
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 96
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 738 0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 202 0
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 418  
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
30-89 Days Past Due | Nonperforming Receivable | Pass | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due | Nonperforming Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 2,979 5,657
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 2,706 5,327
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   4,882
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 2,304  
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 330 442
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 330 442
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   3
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 72  
90 Days or More Past Due | Nonperforming Receivable | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
90 Days or More Past Due | Nonperforming Receivable | Loans acquired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 273 330
90 Days or More Past Due | Nonperforming Receivable | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 270 290
90 Days or More Past Due | Nonperforming Receivable | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due | Nonperforming Receivable | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
90 Days or More Past Due | Nonperforming Receivable | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 31
90 Days or More Past Due | Nonperforming Receivable | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3 9
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   4,882
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 2,304  
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 330 442
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | One-to-four family residential mortgage | Equal to or Greater than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   0
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total   3
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 0
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans Held For Investment | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 72  
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Less Than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 212 231
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 58 59
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | One-to-four family residential mortgage | Less Than 60% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0 $ 0
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | Multifamily | Equal to or Greater than 35% LTV    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | Home equity and lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 0  
90 Days or More Past Due | Nonperforming Receivable | Substandard | Loans acquired | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total 3  
90 Days or More Past Due | Nonperforming Receivable | Pass | Loans Held For Investment | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total $ 0