GOODWILL AND OTHER INTANGIBLES - Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Jul. 31, 2025	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
GOODWILL AND OTHER INTANGIBLES
Gross Intangible Assets			$ 24,811	$ 11,601
Accumulated Amortization			(8,404)	(7,663)
Net Intangible Assets			16,407	3,938
Amortization of intangible assets			1,514	932	$ 932
Estimated aggregate future amortization expense for other intangible assets
2026			2,330
2027			2,330
2028			2,357
2029			1,583
2030			1,398
2031 and thereafter			$ 6,409
Minimum
GOODWILL AND OTHER INTANGIBLES
Useful life			5 years
Maximum
GOODWILL AND OTHER INTANGIBLES
Useful life			11 years
Guaranty Bancorp, Inc.
GOODWILL AND OTHER INTANGIBLES
Average life	10 years
Core deposit intangible
GOODWILL AND OTHER INTANGIBLES
Gross Intangible Assets			$ 22,691	9,483
Accumulated Amortization			(6,969)	(6,423)
Net Intangible Assets			15,722	3,060
Core deposit intangible | Guaranty Bancorp, Inc.
GOODWILL AND OTHER INTANGIBLES
Intangible assets acquired		$ 14,000
Average life		10 years
Customer list and other intangibles
GOODWILL AND OTHER INTANGIBLES
Gross Intangible Assets			2,120	2,118
Accumulated Amortization			(1,435)	(1,240)
Net Intangible Assets			$ 685	$ 878