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Capitalized Mortgage Servicing Rights (Tables) | 6 Months Ended
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Jun. 30, 2021
Capitalized Mortgage Servicing Rights |
Summary of capitalized MSR activity | A summary of our capitalized MSR activity is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2021 | ​ | Six Months Ended June 30, 2021
​ |  | Originated |  | Acquired |  | Total |  | Originated |  | Acquired |  | Total
Beginning balance | ​ | $ | 367,428 | ​ | $ | 39,552 | ​ | $ | 406,980 | ​ | $ | 336,466 | ​ | $ | 43,508 | ​ | $ | 379,974
Additions | ​ | ​ | 31,971 | ​ | ​ | — | ​ | ​ | 31,971 | ​ | ​ | 77,009 | ​ | ​ | — | ​ | ​ | 77,009
Amortization | ​ | ​ | (11,796) | ​ | ​ | (2,871) | ​ | ​ | (14,667) | ​ | ​ | (22,875) | ​ | ​ | (5,996) | ​ | ​ | (28,871)
Write-downs and payoffs | ​ | ​ | (4,540) | ​ | ​ | (1,091) | ​ | ​ | (5,631) | ​ | ​ | (7,537) | ​ | ​ | (1,922) | ​ | ​ | (9,459)
Ending balance | ​ | $ | 383,063 | ​ | $ | 35,590 | ​ | $ | 418,653 | ​ | $ | 383,063 | ​ | $ | 35,590 | ​ | $ | 418,653
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2020 | ​ | Six Months Ended June 30, 2020
Beginning balance |  | $ | 230,377 |  | $ | 58,577 |  | $ | 288,954 |  | $ | 221,901 |  | $ | 64,519 |  | $ | 286,420
Additions | ​ | ​ | 39,875 | ​ | ​ | — | ​ | ​ | 39,875 | ​ | ​ | 60,151 | ​ | ​ | — | ​ | ​ | 60,151
Amortization | ​ | ​ | (7,998) | ​ | ​ | (3,893) | ​ | ​ | (11,891) | ​ | ​ | (15,614) | ​ | ​ | (8,099) | ​ | ​ | (23,713)
Write-downs and payoffs | ​ | ​ | (1,802) | ​ | ​ | (1,848) | ​ | ​ | (3,650) | ​ | ​ | (5,986) | ​ | ​ | (3,584) | ​ | ​ | (9,570)
Ending balance | ​ | $ | 260,452 | ​ | $ | 52,836 | ​ | $ | 313,288 | ​ | $ | 260,452 | ​ | $ | 52,836 | ​ | $ | 313,288
​
Schedule of expected amortization of capitalized MSRs recorded | The expected amortization of capitalized MSRs recorded as of June 30, 2021 is as follows (in thousands): ​
​ | ​ | ​ | ​
Year |  | Amortization
2021 (six months ending 12/31/2021) | ​ | $ | 29,936
2022 |  | ​ | 57,277
2023 |  | ​ | 53,613
2024 |  | ​ | 49,872
2025 | ​ | ​ | 46,778
2026 | ​ | ​ | 42,711
Thereafter |  | ​ | 138,466
Total | ​ | $ | 418,653
​

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- Definition Tabular disclosure of activity in the balance of servicing assets subsequently measured at amortized cost. Includes, but is not limited to, beginning and ending balances, additions, disposals, and amortization. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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