CONDENSED FINANCIAL INFORMATION - PARENT COMPANY ONLY, Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets [Abstract]
Cash	$ 37,733	$ 24,814
Investments	417,601	439,506
Investment in subsidiary [Abstract]
Other assets	59,074	25,802
TOTAL ASSETS	2,975,321	2,333,393
Liabilities [Abstract]
Other liabilities	39,918	20,802
Borrowed funds	322,036	257,278
TOTAL LIABILITIES	2,695,655	2,133,246
Stockholders' equity	279,666	200,147	$ 212,492	$ 194,259
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	2,975,321	2,333,393
Parent Company [Member]
Assets [Abstract]
Cash	1,685	13,490
Investments	1,780	2,116
Investment in subsidiary [Abstract]
First Citizens Community Bank	313,381	200,610
Other assets	2,891	2,291
TOTAL ASSETS	319,737	218,507
Liabilities [Abstract]
Other liabilities	1,066	968
Borrowed funds	39,005	17,392
TOTAL LIABILITIES	40,071	18,360
Stockholders' equity	279,666	200,147
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 319,737	$ 218,507