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Analysis of Contractual Maturities of Outstanding Repurchase Agreements (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Amount |  |
Repurchase agreements | $ 500,000 | $ 450,000
Weighted Average Interest Rate |  |
Contractual Maturity Over 90 days, Weighted Average Interest Rate | 2.10% |
Earlier of Contractual Maturity or Next Call Date [Member] |  |
Amount |  |
2019 | $ 200,000 |
2021 | 300,000 |
Repurchase agreements | $ 500,000 |
Weighted Average Interest Rate |  |
2019 | 1.69% |
2021 | 2.37% |
Contractual Maturity Over 90 days, Weighted Average Interest Rate | 2.10% |
Contractual Maturity |  |
Amount |  |
2019 | $ 200,000 |
2028 | 300,000 |
Repurchase agreements | $ 500,000 |
Weighted Average Interest Rate |  |
2019 | 1.69% |
2028 | 2.37% |
Contractual Maturity Over 90 days, Weighted Average Interest Rate | 2.10% |

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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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