CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 43,963	$ 49,927	$ 49,884	$ 54,382	$ 46,855
Basic weighted average shares outstanding	34,300,742				34,973,383
Dilutive effect of unvested restricted stock	297,694				330,100
Diluted weighted shares outstanding	34,598,436				35,303,483
Earnings per common share
Basic	$ 1.28				$ 1.34
Diluted	$ 1.27				$ 1.33