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Borrowings - Repurchase agreements accounted for as secured borrowings (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 90,925 | $ 121,303
Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 90,925 | 121,303
US Treasury Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 79,123 | 116,454
US Treasury Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 29,398 | 67,157
US Treasury Securities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 24,423 | 39,318
US Treasury Securities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 25,302 | 9,979
Mortgage Backed Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 11,081 | 4,046
Mortgage Backed Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 1,349 | 3,778
Mortgage Backed Securities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 387 | 268
Mortgage Backed Securities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 9,345 | 0
CMO | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | 721 | 803
CMO | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 721 | $ 803

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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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