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v3.20.2

Fair value measurement - Changes in level 3 assets and liabilities measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance | $ 143,160 | $ 155,368 | $ 153,058 | $ 172,149
Gains (Losses) included in earnings | (20,501) | (4,855) | (33,387) | (25,883)
Gains (losses) included in OCI | (2) | (1) | (8) | 1
Additions | 2,901 | 2,474 | 6,010 | 6,818
Settlements | (59) | (86) | (174) | (185)
Ending Balance | 125,499 | 152,900 | 125,499 | 152,900
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss | (7,892) | (1,569) | (15,265) | (15,979)
Debt securities available-for-sale | Mortgage Backed Securities |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance | 1,151 | 1,235 | 1,182 | 1,233
Gains (Losses) included in earnings | 0 | 0 | 0 | 0
Gains (losses) included in OCI | (2) | (1) | (8) | 1
Additions | 0 | 0 | 0 | 0
Settlements | (25) | (25) | (50) | (25)
Ending Balance | 1,124 | 1,209 | 1,124 | 1,209
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss | 0 | 0 | 0 | 0
Trading account debt securities | Mortgage Backed Securities |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance |  | 26 |  | 43
Gains (Losses) included in earnings |  | 0 |  | (1)
Gains (losses) included in OCI |  | 0 |  | 0
Additions |  | 0 |  | 25
Settlements |  | 0 |  | (41)
Ending Balance |  | 26 |  | 26
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss |  | 0 |  | 1
Trading account debt securities | CMO |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance | 442 | 618 | 530 | 611
Gains (Losses) included in earnings | 0 | (1) | 0 | 0
Gains (losses) included in OCI | 0 | 0 | 0 | 0
Additions | 2 | 1 | 4 | 65
Settlements | (34) | (61) | (124) | (119)
Ending Balance | 410 | 557 | 410 | 557
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss | 0 | 1 | 0 | 0
Trading account debt securities | Other |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance | 423 | 468 | 440 | 485
Gains (Losses) included in earnings | (10) | (12) | (27) | (29)
Gains (losses) included in OCI | 0 | 0 | 0 | 0
Additions | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Ending Balance | 413 | 456 | 413 | 456
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss | 0 | 5 | 13 | 13
Mortgage Servicing Rights |  |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |  |
Beginning Balance | 141,144 | 153,021 | 150,906 | 169,777
Gains (Losses) included in earnings | (20,491) | (4,842) | (33,360) | (25,853)
Gains (losses) included in OCI | 0 | 0 | 0 | 0
Additions | 2,899 | 2,473 | 6,006 | 6,728
Settlements | 0 | 0 | 0 | 0
Ending Balance | 123,552 | 150,652 | 123,552 | 150,652
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss | $ (7,892) | $ (1,575) | $ (15,278) | $ (15,993)

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