BASIS OF PRESENTATION (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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	$ 56,564	$ 55,924	$ 151,526	$ 170,343
Preferred dividends	(2,013)	(2,013)	(6,038)	(6,038)
Net income available to common stockholders	$ 54,551	$ 53,911	$ 145,488	$ 164,305
Weighted average common shares outstanding for basic earnings per share (in shares)	42,575	42,303	42,471	42,241
Assumed incremental common shares issued upon vesting of outstanding restricted stock units (in shares)	69	113	125	140
Weighted average common shares for diluted earnings per share (in shares)	42,644	42,416	42,596	42,381
Earnings per common share — basic (in dollars per share)	$ 1.28	$ 1.27	$ 3.43	$ 3.89
Earnings per common share — diluted (in dollars per share)	$ 1.28	$ 1.27	$ 3.42	$ 3.88
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation (in shares)	4	3	8	1