EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
EARNINGS PER SHARE
Net income available to common stockholders (in thousands)	$ 13,758	$ 12,259	$ 36,012	$ 45,927
Average number of common shares outstanding	49,626,152	54,021,542	50,738,918	55,599,758
Less: Average unallocated ESOP shares and non-vested restricted shares	(3,795,415)	(4,220,419)	(3,863,606)	(4,237,506)
Weighted average common shares outstanding used to calculate basic earnings per common share	45,830,737	49,801,123	46,875,312	51,362,252
Dilutive effect of share-based compensation	589,790	862,292	666,335	732,497
Weighted average common shares outstanding used to calculate diluted earnings per common share	46,420,527	50,663,415	47,541,647	52,094,749
Basic	$ 0.30	$ 0.25	$ 0.77	$ 0.89
Diluted	$ 0.30	$ 0.24	$ 0.76	$ 0.88