EARNINGS APPLICABLE TO COMMON SHAREHOLDERS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
EARNINGS APPLICABLE TO COMMON SHAREHOLDERS
Net income available to common stock holders, basic earnings per share	$ 11,917	$ 12,272	$ 37,171	$ 31,890
Net income available to common stock holders, diluted earnings per share	$ 11,917	$ 12,272	$ 37,171	$ 31,890
Effect of dilutive shares:
Weighted average number of shares outstanding, basic earnings per share	21,405,309	17,130,610	20,521,779	16,653,045
Restricted stock grants	108,400	150,713	125,466	136,873
Weighted average number of shares outstanding, diluted earnings per share	21,513,709	17,281,323	20,647,245	16,789,918
Basic earnings per share	$ 0.56	$ 0.72	$ 1.81	$ 1.91
Diluted earnings per share	$ 0.55	$ 0.71	$ 1.80	$ 1.90