CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Beginning Balance at Dec. 31, 2017	$ 11,193,000	$ 158,456,000	$ 53,721,000	$ (438,000)	$ (464,000)	$ 222,468,000
Beginning Balance (in shares) at Dec. 31, 2017	11,192,401				(26,494)
Net income	$ 0	0	21,225,000	0	$ 0	21,225,000
Other comprehensive income	0	0	0	(1,358,000)	0	(1,358,000)
Dividends on common stock	0	0	(2,600,000)	0	0	(2,600,000)
Issuance of shares for Southwest acquisition	$ 1,134,000	34,871,000	0	0	0	36,005,000
Issuance of shares for Southwest acquisition (in shares)	1,134,010
Issuance of shares for Sunshine acquisition	$ 726,000	22,702,000	0	0	0	23,428,000
Issuance of shares for Sunshine acquisition (in shares)	726,461
Issuance of shares for FMB acquisition	$ 1,763,000	61,777,000	0	0	0	63,540,000
Issuance of shares for FMB acquisition (in shares)	1,763,042
Issuance of restricted stock grant	$ 61,000	(61,000)	0	0	0	0
Issuance of restricted stock grant (in shares)	60,984
Expenses associated with common stock issuance	$ 0	(237,000)	0	0	0	(237,000)
Restricted stock grant forfeited	$ (19,000)	19,000	0	0	0	0
Restricted stock grant forfeited (in shares)	(19,236)
Compensation expense	$ 0	1,154,000	0	0	0	1,154,000
ASU 2016-01 Implementation	0	0	(348,000)	0	0	(348,000)
Repurchase of restricted stock for payment of taxes	$ (1,000)	(22,000)	0	0	0	(23,000)
Repurchase of restricted stock for payment of taxes (in shares)	(570)
Ending Balance at Dec. 31, 2018	$ 14,857,000	278,659,000	71,998,000	(1,796,000)	$ (464,000)	363,254,000
Ending Balance (in shares) at Dec. 31, 2018	14,857,092				(26,494)
Net income	$ 0	0	43,745,000	0	$ 0	43,745,000
Common stock repurchased	0	0	0	0	$ (5,229,000)	(5,229,000)
Common stock repurchased (in shares)					(168,188)
Other comprehensive income	0	0	0	11,885,000	$ 0	11,885,000
Dividends on common stock	0	0	(5,283,000)	0	0	(5,283,000)
Issuance of shares for FPB acquisition	$ 2,378,000	75,842,000	0	0	0	78,220,000
Issuance of shares for FPB acquisition (in shares)	2,377,501
Issuance of shares for FFB acquisition	$ 1,683,000	53,785,000	0	0	0	55,468,000
Issuance of shares for FFB acquisition (in shares)	1,682,889
Issuance of restricted stock grant	$ 89,000	(89,000)	0	0	0	0
Issuance of restricted stock grant (in shares)	89,315
Restricted stock grant forfeited	$ (8,000)	8,000	0	0	0	0
Restricted stock grant forfeited (in shares)	(7,931)
Compensation expense	$ 0	1,661,000	0	0	0	1,661,000
Repurchase of restricted stock for payment of taxes	$ (2,000)	(61,000)	0	0	0	(63,000)
Repurchase of restricted stock for payment of taxes (in shares)	(1,918)
Ending Balance at Dec. 31, 2019	$ 18,997,000	409,805,000	110,460,000	10,089,000	$ (194,682)	543,658,000
Ending Balance (in shares) at Dec. 31, 2019	18,996,948				(5,693,000)
Net income	$ 0	0	52,505,000	0	$ 0	52,505,000
Common stock repurchased	0	0	0	0	$ (8,067,000)	(8,067,000)
Common stock repurchased (in shares)					(289,302)
Other comprehensive income	0	0	0	15,727,000	$ 0	15,727,000
Dividends on common stock	0	0	(8,724,000)	0	0	(8,724,000)
Issuance of shares for SWG acquisition	$ 2,547,000	45,311,000	0	0	0	47,858,000
Issuance of shares for SWG acquisition (in shares)	2,546,967
Issuance of restricted stock grant	$ 78,000	(78,000)	0	0	0	0
Issuance of restricted stock grant (in shares)	78,189
Restricted stock grant forfeited	$ (7,000)	7,000	0	0	0	0
Restricted stock grant forfeited (in shares)	(7,421)
Compensation expense	$ 0	2,352,000	0	0	0	2,352,000
Repurchase of restricted stock for payment of taxes	$ (16,000)	(478,000)	0	0	0	(494,000)
Repurchase of restricted stock for payment of taxes (in shares)	(15,690)
Ending Balance at Dec. 31, 2020	$ 21,599,000	$ 456,919,000	$ 154,241,000	$ 25,816,000	$ (13,760,000)	$ 644,815,000
Ending Balance (in shares) at Dec. 31, 2020	21,598,993				(483,984)