BASIS OF PRESENTATION (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share
Net income	$ 51,873	$ 61,605	$ 94,962	$ 114,419
Preferred dividends	(2,012)	(2,012)	(4,025)	(4,025)
Net income available to common stockholders	$ 49,861	$ 59,593	$ 90,937	$ 110,394
Weighted average common shares outstanding for basic earnings per share (in shares)	42,475	42,243	42,418	42,210
Assumed incremental common shares issued upon vesting of outstanding restricted stock units (in shares)	91	117	145	147
Weighted average common shares for diluted earnings per share (in shares)	42,566	42,360	42,563	42,357
Earnings per common share — basic (in dollars per share)	$ 1.17	$ 1.41	$ 2.14	$ 2.62
Earnings per common share — diluted (in dollars per share)	$ 1.17	$ 1.41	$ 2.14	$ 2.61
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation (in shares)	172	1	76	60