Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands |
6 Months Ended | ||||
|---|---|---|---|---|---|
Sep. 02, 2025 |
Jan. 31, 2025 |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Finite Lived Intangible Assets [Line Items] | |||||
| Goodwill | $ 1,837,594 | $ 1,839,825 | $ 207,385 | ||
| Heartland Financial USA, Inc [Member] | |||||
| Finite Lived Intangible Assets [Line Items] | |||||
| Goodwill | $ 1,630,209 | ||||
| Core deposit intangible asset | 474,100 | ||||
| Wealth customer list | 26,000 | ||||
| Purchased credit card relationships | $ 10,900 | ||||
| Adjustment to goodwill | $ 2,200 | ||||
| Healthcare Savings Account Business [Member] | |||||
| Finite Lived Intangible Assets [Line Items] | |||||
| Deposit acquired | $ 32,500 | ||||
| Core deposit intangible asset | $ 4,800 |
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- Definition Core deposit intangible asset. No definition available.
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- Definition Deposit acquired. No definition available.
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- Definition Purchased credit card relationships. No definition available.
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- Definition Wealth customer list. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase (decrease) of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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