CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended							9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 36,548	$ 23,541	$ 16,882	$ 33,655	$ 39,577	$ 39,700	$ 33,346	$ 76,971	$ 112,623
Basic weighted average shares outstanding	35,193,109				34,407,462			35,285,567	34,760,607
Plus unvested restricted stock	123,570				90,532			239,204	89,399
Diluted weighted shares outstanding	35,316,679				34,497,994			35,524,771	34,850,006
Earnings per common share
Basic	$ 1.04				$ 1.15			$ 2.18	$ 3.24
Diluted	$ 1.03				$ 1.15			$ 2.17	$ 3.23