Comprehensive Income Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ 240,930	$ 223,883	$ 240,930	$ 223,883	$ 237,873	$ 227,875	$ 223,756	$ 225,043
Net current period other comprehensive income (loss), net of tax	(1,387)	(1,494)	5,524	(3,897)
Unrealized gains (losses) on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	(86,405)	(98,173)	(86,405)	(98,173)		(96,564)		(91,233)
Other comprehensive income (loss) before reclassifications, net of tax			10,172	(6,924)
Amounts reclassified from accumulated other comprehensive income, net of tax			(13)	(16)
Net current period other comprehensive income (loss), net of tax			10,159	(6,940)
Unrealized gains (losses) on derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	2,572	10,753	2,572	10,753		7,207		7,710
Other comprehensive income (loss) before reclassifications, net of tax			(2,514)	7,421
Amounts reclassified from accumulated other comprehensive income, net of tax			(2,121)	(4,378)
Net current period other comprehensive income (loss), net of tax			(4,635)	3,043
Accumulated other comprehensive income (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	(83,833)	(87,420)	(83,833)	(87,420)	$ (82,446)	$ (89,357)	$ (85,926)	$ (83,523)
Other comprehensive income (loss) before reclassifications, net of tax			7,658	497
Amounts reclassified from accumulated other comprehensive income, net of tax			(2,134)	(4,394)
Net current period other comprehensive income (loss), net of tax	$ (1,387)	$ (1,494)	$ 5,524	$ (3,897)

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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WEST BANCORPORATION INC 10-Q