PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Condensed Statements of Income (Details) - South Plains Financial, Inc. [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION [Abstract]
Dividends	$ 49,550	$ 31,400	$ 35,000
Other income	88	102	100
Interest expense	(5,644)	(6,721)	(7,294)
Other expense	(2,383)	(2,168)	(1,897)
Income before income taxes	41,611	22,613	25,909
Income tax benefit	(1,667)	(1,845)	(1,904)
Equity in undistributed subsidiary income	15,193	25,259	34,932
Net income	$ 58,471	$ 49,717	$ 62,745