SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financial results by reportable segments [Abstract]
Net interest income	$ 31,273	$ 26,568	$ 91,920	$ 75,951
Provision for loan loss	(6,062)	(420)	(25,429)	(1,903)
Noninterest income	31,660	14,115	75,431	39,893
Noninterest expense	(35,993)	(30,028)	(105,211)	(89,994)
Income before income taxes	20,878	10,235	36,711	23,947
Income tax (expense) benefit	(4,147)	(1,977)	(7,282)	(4,836)
Net income	16,731	8,258	29,429	19,111
Banking [Member] | Operating Segments [Member]
Financial results by reportable segments [Abstract]
Net interest income	31,273	26,568	91,920	75,951
Provision for loan loss	(6,062)	(420)	(25,429)	(1,903)
Noninterest income	28,393	13,048	70,050	35,981
Noninterest expense	(33,984)	(29,109)	(100,876)	(87,279)
Income before income taxes	19,620	10,087	35,665	22,750
Income tax (expense) benefit	(3,891)	(1,945)	(7,008)	(4,674)
Net income	15,729	8,142	28,657	18,076
Insurance [Member] | Operating Segments [Member]
Financial results by reportable segments [Abstract]
Net interest income	0	0	0	0
Provision for loan loss	0	0	0	0
Noninterest income	3,267	1,067	5,381	3,912
Noninterest expense	(2,009)	(919)	(4,335)	(2,715)
Income before income taxes	1,258	148	1,046	1,197
Income tax (expense) benefit	(256)	(32)	(274)	(162)
Net income	$ 1,002	$ 116	$ 772	$ 1,035