ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest income (expense)	$ (61,117)	$ (59,110)	$ (178,102)	$ (177,776)
Income tax (expense) benefit	3,757	4,535	9,773	17,028
Net income	7,557	20,431	(121,393)	68,813
Reclassification out of Accumulated Other Comprehensive Income \| Gains and losses on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest income (expense)	(197)	1,266	(1,676)	(1,267)
Income tax (expense) benefit	52	(334)	441	398
Net income	$ (145)	$ 932	$ (1,235)	$ (869)

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.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Midland States Bancorp, Inc. 10-Q