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Loans - Investment of Originated Loans Held-for-Investment by Loan Type and Credit Quality Indicator (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | $ 3,213,689 | $ 2,987,067
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 3,197,089 | 2,968,346
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 2,531 | 2,850
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 14,069 | 15,871
Real Estate | Multifamily | Less Than 35% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 248,705 | 233,251
Real Estate | Multifamily | Less Than 35% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 248,120 | 232,950
Real Estate | Multifamily | Less Than 35% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Real Estate | Multifamily | Less Than 35% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 585 | 301
Real Estate | Multifamily | Equal to or Greater than 35% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 2,055,461 | 1,966,483
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 2,049,444 | 1,960,984
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 760 | 296
Real Estate | Multifamily | Equal to or Greater than 35% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 5,257 | 5,203
Real Estate | Commercial | Less Than 35% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 90,805 | 79,855
Real Estate | Commercial | Less Than 35% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 90,805 | 79,485
Real Estate | Commercial | Less Than 35% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 370
Real Estate | Commercial | Less Than 35% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Real Estate | Commercial | Equal to or Greater than 35% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 445,440 | 449,432
Real Estate | Commercial | Equal to or Greater than 35% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 438,479 | 440,065
Real Estate | Commercial | Equal to or Greater than 35% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 808 | 1,092
Real Estate | Commercial | Equal to or Greater than 35% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 6,153 | 8,275
Real Estate | One-to-Four Family | Less Than 60% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 55,838 | 55,060
Real Estate | One-to-Four Family | Less Than 60% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 53,521 | 52,886
Real Estate | One-to-Four Family | Less Than 60% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 590 | 777
Real Estate | One-to-Four Family | Less Than 60% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 1,727 | 1,397
Real Estate | One-to-Four Family | Equal to or Greater than 60% LTV |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 28,351 | 30,295
Real Estate | One-to-Four Family | Equal to or Greater than 60% LTV | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 28,326 | 29,967
Real Estate | One-to-Four Family | Equal to or Greater than 60% LTV | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Real Estate | One-to-Four Family | Equal to or Greater than 60% LTV | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 25 | 328
Real Estate | Construction and Land |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 46,843 | 38,303
Real Estate | Construction and Land | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 46,843 | 38,303
Real Estate | Construction and Land | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Real Estate | Construction and Land | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Real Estate | Home Equity and Lines of Credit |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 90,110 | 86,848
Real Estate | Home Equity and Lines of Credit | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 89,749 | 86,547
Real Estate | Home Equity and Lines of Credit | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 76 | 14
Real Estate | Home Equity and Lines of Credit | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 285 | 287
Commercial and Industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 149,725 | 45,456
Commercial and Industrial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 149,391 | 45,075
Commercial and Industrial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 297 | 301
Commercial and Industrial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 37 | 80
Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 2,411 | 2,084
Other | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 2,411 | 2,084
Other | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | 0 | 0
Other | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Originated loans held-for-investment, net | $ 0 | $ 0

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