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Condensed Financial Statements of Parent Company - Summary of Condensed Income Statements of Parent Company (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating expense: |  |  |
Total interest expense | $ 673,430 | $ 679,911 | $ 261,653
Income tax benefit | (42,904) | (80,597) | (63,263)
Net income | 181,469 | 250,143 | 228,034
Preferred stock dividends | 15,040 | 14,695 | 9,632
Net income available to common shareholders | 166,429 | 235,448 | 218,402
Net income available to common shareholders | 166,429 | 235,448 | 218,402
Comprehensive income | 221,478 | 276,670 | 69,918
Customers Bancorp |  |  |
Operating income: |  |  |
Dividends from bank subsidiary | 125,000 | 90,000 | 52,000
Other | 900 | 1,643 | 1,264
Total operating income | 125,900 | 91,643 | 53,264
Operating expense: |  |  |
Total interest expense | 8,130 | 8,459 | 10,657
Other | 3,961 | 2,251 | 3,410
Total operating expense | 12,091 | 10,710 | 14,067
Income before taxes and undistributed income of subsidiaries | 113,809 | 80,933 | 39,197
Income tax benefit | 2,445 | 2,026 | 2,819
Income before undistributed income of subsidiaries | 116,254 | 82,959 | 42,016
Equity in undistributed income of subsidiaries | 65,215 | 167,184 | 186,018
Net income | 181,469 | 250,143 | 228,034
Preferred stock dividends | 15,040 | 14,695 | 9,632
Net income available to common shareholders | 166,429 | 235,448 | 218,402
Net income available to common shareholders | 166,429 | 235,448 | 218,402
Comprehensive income | $ 221,478 | $ 276,670 | $ 69,918

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