OTHER NON-INTEREST EXPENSE (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Other Income and Expenses [Abstract]
Corporate development and related	$ 2,685	$ 2,440
Loan and deposit related	2,124	1,420
Other	565	687
Total other non-interest expense	$ 5,374	$ 4,547

The amount of other non-interest expense based on aggregate total interest income and other income.

No definition available.

Name:	myfw_OtherNonInterestExpenseBasedOnAggregateTotalInterestAndOtherIncome
Namespace Prefix:	myfw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration