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Fair Value of Assets & Liabilities - Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Beginning balance | $ (31,540) | $ (5,645)
Net income | 135 | (296)
Purchases | 0 | 0
Sales | 0 | 0
Settlements | 2,435 | 296
Net transfers into/(out of) Level 3 | 0 | 0
Ending balance | (28,970) | (5,645)
Net unrealized gains/(losses) included in net income | 135 | (296)
Trading securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 1,524 | 2,151
Net income | 21 | 16
Purchases | 0 | 0
Sales | 0 | 0
Settlements | (148) | (241)
Net transfers into/(out of) Level 3 | 0 | 0
Ending balance | 1,397 | 1,926
Net unrealized gains/(losses) included in net income | (30) | (25)
Interest- only strips- AFS |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 9,902 | 1,270
Net income | (1,258) | 1,592
Purchases | 86 | 0
Sales | (13,012) | (9,193)
Settlements | 0 | 0
Net transfers into/(out of) Level 3 | 17,477 | 9,064
Ending balance | 13,195 | 2,733
Net unrealized gains/(losses) included in net income | (894) | 19
Loans held- for-sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning balance | 16,273 | 18,926
Net income | 495 | 169
Purchases | 0 | 28
Sales | 0 | 0
Settlements | (1,017) | (789)
Net transfers into/(out of) Level 3 | 0 | 0
Ending balance | 15,751 | 18,334
Net unrealized gains/(losses) included in net income | $ 495 | $ 169

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- Definition Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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