EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2026	Sep. 30, 2025	Mar. 31, 2025
ACQUISITION
Net Income (Loss)	$ 13,537		$ 10,211
Average number of basic common shares outstanding (in shares)	16,728,128		15,303,645
Plus: dilutive effect of stock options and awards outstanding (in shares)	76,010		88,894
Average number of diluted common shares outstanding (in shares)	16,804,138		15,392,539
Earnings per share:
Basic (in dollars per share)	$ 0.81		$ 0.67
Diluted (in dollars per share)	$ 0.81		$ 0.66
Guaranty Bancorp, Inc.
Earnings per share:
Shares issued to Guaranty Bancorp, Inc. stockholders		1,350,464

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