CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Statements of income
Income tax expense - continuing operations									$ 9,532	$ 8,450	$ 3,373
Income from discontinued operations, before income taxes									0	575	0
Income tax expense - discontinued operations									0	148	0
Net income from discontinued operations									0	427	0
Equity in undistributed income earnings of subsidiaries									24,174	0	0
Net income	$ 11,838	$ 6,491	$ 18,034	$ 1,048	$ 4,095	$ 4,327	$ 15,377	$ 3,192	37,411	26,991	12,003
Preferred dividends									461	479	489
Net income available to common shareholders									36,950	26,512	11,514
Parent Company
Condensed Statements of income
Income, dividends from Bank subsidiary									6,688	6,280	8,906
Operating expenses									16,804	14,296	13,439
Loss from continuing operations, before income taxes									(10,116)	(8,016)	(4,533)
Income tax expense - continuing operations									(2,082)	(1,880)	(1,569)
Net loss from continuing operations									(8,034)	(6,136)	(2,964)
Income from discontinued operations, before income taxes									0	575	0
Income tax expense - discontinued operations									0	148	0
Net income from discontinued operations									0	427	0
Equity in undistributed income earnings of subsidiaries									45,445	32,700	14,967
Net income									37,411	26,991	12,003
Preferred dividends									461	479	489
Net income available to common shareholders									$ 36,950	$ 26,512	$ 11,514