BASIS OF PRESENTATION (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share
Net income available to stockholders	$ 20,040	$ 31,497
Weighted average common shares outstanding for basic earnings per share (in shares)	36,821	34,564
Assumed incremental common shares issued upon vesting of outstanding restricted stock units (in shares)	75	136
Weighted average common shares for diluted earnings per share (in shares)	36,896	34,700
Earnings per common share — basic (in dollars per share)	$ 0.54	$ 0.91
Earnings per common share — diluted (in dollars per share)	$ 0.54	$ 0.91
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation (in shares)	0	2