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Borrowings - Repurchase agreements accounted for as secured borrowings (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 121,303 | $ 193,378
Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 121,303 | $ 193,378
Repurchase liability weighted average interest rate | 1.07% | 2.46%
US Treasury Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 116,454 | $ 191,245
Repurchase liability weighted average interest rate | 1.10% | 2.49%
US Treasury Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 67,157 | $ 88,646
Repurchase liability weighted average interest rate | 1.16% | 2.59%
US Treasury Securities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 39,318 | $ 78,061
Repurchase liability weighted average interest rate | 1.20% | 2.36%
US Treasury Securities | After 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 9,979 | $ 24,538
Repurchase liability weighted average interest rate | 0.33% | 2.52%
Mortgage Backed Securities | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 4,046 | $ 1,235
Repurchase liability weighted average interest rate | 0.36% | 0.30%
Mortgage Backed Securities | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 3,778 | $ 1,235
Repurchase liability weighted average interest rate | 0.28% | 0.30%
Mortgage Backed Securities | After 30 to 90 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 268 | $ 0
Repurchase liability weighted average interest rate | 1.50% | 0.00%
CMO | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 803 | $ 898
Repurchase liability weighted average interest rate | 0.24% | 0.24%
CMO | Within 30 days | Secured Debt |  |
Assets Sold under Agreements to Repurchase |  |
Repurchase liability | $ 803 | $ 898
Repurchase liability weighted average interest rate | 0.24% | 0.24%

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- Definition Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: 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)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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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=6876686&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=26873400&loc=d3e23780-122690 + Details
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