PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION - Balance Sheet and Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Other assets	$ 45,806	$ 34,848
Total assets	3,086,070	2,740,832
LIABILITIES AND EQUITY
Subordinated debentures	19,810	19,810
Accrued interest and other liabilities	26,568	25,257
Shareholders' equity	302,214	272,643	$ 261,551	$ 244,583
Total liabilities and shareholders' equity	3,086,070	2,740,832
Income Statement [Abstract]
Interest income	102,550	103,042	102,561
Interest expense	6,992	13,060	23,691
Income before income taxes	48,556	33,297	32,057
Tax effect	(8,750)	(5,895)	(5,778)
Net earnings	39,806	27,402	26,279
Comprehensive income	36,482	38,824	33,648
Parent Company
ASSETS
Cash and cash equivalents	2,709	1,227
Investment in banking subsidiaries	326,489	305,926
Other assets	627	451
Total assets	329,825	307,604
LIABILITIES AND EQUITY
Line of credit	5,000	12,000
Subordinated debentures	19,810	19,810
Accrued interest and other liabilities	2,801	3,151
Shareholders' equity	302,214	272,643
Total liabilities and shareholders' equity	329,825	307,604
Income Statement [Abstract]
Interest income	7	10	15
Dividends from Guaranty Bank & Trust	18,000	0	23,000
Income	18,007	10	23,015
Interest expense	916	939	653
Other expenses	2,520	2,000	1,819
Expenses	3,436	2,939	2,472
Income before income taxes	14,571	(2,929)	20,543
Tax effect	(718)	(574)	(639)
Net of Tax	15,289	(2,355)	21,182
Equity in undistributed earnings of subsidiary	(24,517)	(29,757)	(5,097)
Net earnings	39,806	27,402	26,279
Comprehensive income	$ 36,482	$ 38,824	$ 33,648