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Investment Securities - Summary of Held to Maturity Debt Securities by Stated Maturity (Detail) $ in Thousands | Mar. 31, 2023 USD ($)
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Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | $ 870,294
Fair Value | 836,713
Asset-backed securities |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 322,877
Fair Value | 319,735
Agency-guaranteed residential mortgage-backed securities |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 7,152
Fair Value | 6,639
Agency-guaranteed commercial mortgage-backed securities |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 1,909
Fair Value | 1,848
Agency-guaranteed residential collateralized mortgage obligations |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 201,097
Fair Value | 187,961
Agency-guaranteed commercial collateralized mortgage obligations |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 150,852
Fair Value | 143,613
Private label collateralized mortgage obligations |
Schedule of Held-to-Maturity Securities [Line Items] |
Amortized Cost | 186,407
Fair Value | $ 176,917

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- Definition Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) without single maturity date and not allocated over maturity grouping. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126980459&loc=d3e62586-112803 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), without single maturity date and not allocated over maturity grouping. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5B -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL120269825-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 + Details
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