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INTEREST INCOME AND INTEREST EXPENSE - Components of Company's Interest Income and Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Interest income |  |  |  |
Agency securities | $ 686,912 | $ 497,135 | $ 1,290,014 | $ 1,020,086
Residential credit securities | 56,477 | 30,037 | 110,222 | 52,159
Residential mortgage loans | 162,202 | 91,648 | 309,433 | 165,136
Commercial investment portfolio | 8,310 | 26,575 | 18,197 | 63,858
Reverse repurchase agreements | 7,593 | 220 | 11,878 | 226
Total interest income | 921,494 | 645,615 | 1,739,744 | 1,301,465
Interest expense |  |  |  |
Repurchase agreements | 841,257 | 105,608 | 1,539,999 | 132,487
Debt issued by securitization vehicles | 101,819 | 50,303 | 190,753 | 84,928
Participations issued | 10,381 | 9,379 | 21,492 | 15,231
Other | 0 | 5,185 | 0 | 12,751
Total interest expense | 953,457 | 170,475 | 1,752,244 | 245,397
Net interest income | $ (31,963) | $ 475,140 | $ (12,500) | $ 1,056,068

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- Definition Represents interest income, including any amortization and accretion (as applicable) of discounts and premiums, derived from securities backed by a pool of mortgages or trust deeds as well as agency debentures. + References No definition available. + Details
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- Definition Interest income derived from securities purchased under agreements to resell. The difference in the price at which the institution buys the securities and resells the securities represents interest for the use of the funds by the other party. Most repurchase and sale agreements involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances and negotiable certificates of deposits are sometimes used in such transactions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (a) -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (b) -Subparagraph (1) -Publisher SEC Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
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