EARNINGS APPLICABLE TO COMMON SHAREHOLDERS - Earnings Available to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share Basic [Line Items]
Net income available to common stock holders, basic earnings per share	$ 15,600	$ 16,943	$ 32,244	$ 25,254
Net income available to common stock holders, diluted earnings per share	$ 15,600	$ 16,943	$ 32,244	$ 25,254
Effect of dilutive shares:
Weighted average number of shares outstanding, basic earnings per share	21,018,772	21,341,913	21,013,930	20,080,014
Restricted stock grants	188,288	95,267	182,147	125,453
Weighted average number of shares outstanding, diluted earnings per share	21,207,060	21,437,180	21,196,077	20,205,467
Basic earnings per share	$ 0.74	$ 0.79	$ 1.53	$ 1.26
Diluted earnings per share	$ 0.74	$ 0.79	$ 1.52	$ 1.25