LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Aging analysis of recorded investments by class (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total	$ 2,540,096	$ 2,425,565
Current
Financing Receivable, Past Due [Line Items]
Total	2,512,008	2,396,388
Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	2,534,997	2,418,282
Loans Accounted for Under the Fair Value Option
Financing Receivable, Past Due [Line Items]
Total	5,099	7,283
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	3,872	9,320
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	5,752	0
90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	13,365	12,574
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	22,989	21,894
Cash, Securities, and Other
Financing Receivable, Past Due [Line Items]
Total	161,691	119,834
Cash, Securities, and Other \| Current
Financing Receivable, Past Due [Line Items]
Total	159,987	118,130
Cash, Securities, and Other \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	161,691	119,834
Cash, Securities, and Other \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Cash, Securities, and Other \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Cash, Securities, and Other \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,704	1,704
Cash, Securities, and Other \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,704	1,704
Consumer and Other
Financing Receivable, Past Due [Line Items]
Total	21,013	24,765
Consumer and Other \| Current
Financing Receivable, Past Due [Line Items]
Total	15,914	17,482
Consumer and Other \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	15,914	17,482
Consumer and Other \| Loans Accounted for Under the Fair Value Option
Financing Receivable, Past Due [Line Items]
Total	5,099	7,283
Consumer and Other \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Consumer and Other \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Consumer and Other \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Consumer and Other \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Construction and Development
Financing Receivable, Past Due [Line Items]
Total	254,916	314,481
Construction and Development \| Current
Financing Receivable, Past Due [Line Items]
Total	254,916	314,481
Construction and Development \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	254,916	314,481
Construction and Development \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Construction and Development \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Construction and Development \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Construction and Development \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
1-4 Family Residential
Financing Receivable, Past Due [Line Items]
Total	1,015,260	962,901
1-4 Family Residential \| Current
Financing Receivable, Past Due [Line Items]
Total	1,014,059	958,930
1-4 Family Residential \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	1,015,260	962,901
1-4 Family Residential \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	351	3,971
1-4 Family Residential \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	850	0
1-4 Family Residential \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
1-4 Family Residential \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,201	3,971
Non-Owner Occupied CRE
Financing Receivable, Past Due [Line Items]
Total	652,864	611,239
Non-Owner Occupied CRE \| Current
Financing Receivable, Past Due [Line Items]
Total	652,864	611,239
Non-Owner Occupied CRE \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	652,864	611,239
Non-Owner Occupied CRE \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Non-Owner Occupied CRE \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Non-Owner Occupied CRE \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Non-Owner Occupied CRE \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Owner Occupied CRE
Financing Receivable, Past Due [Line Items]
Total	195,603	172,019
Owner Occupied CRE \| Current
Financing Receivable, Past Due [Line Items]
Total	194,558	171,669
Owner Occupied CRE \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	195,603	172,019
Owner Occupied CRE \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,045	350
Owner Occupied CRE \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Owner Occupied CRE \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Owner Occupied CRE \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,045	350
Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Total	238,749	220,326
Commercial and Industrial \| Current
Financing Receivable, Past Due [Line Items]
Total	219,710	204,457
Commercial and Industrial \| Total Amortized Cost
Financing Receivable, Past Due [Line Items]
Total	238,749	220,326
Commercial and Industrial \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	2,476	4,999
Commercial and Industrial \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	4,902	0
Commercial and Industrial \| 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	11,661	10,870
Commercial and Industrial \| Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	$ 19,039	$ 15,869

First Western Financial Inc 10-Q