EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2020

EARNINGS PER SHARE [Line Items]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended September 30, 2020
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	21,079	53,190	$	0.40
Diluted EPS Calculation
Effect of dilutive securities	—		218
Net income available for common stock and common stock equivalents	$	21,079	53,408	$	0.39

	Three Months Ended September 30, 2019
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	17,457	52,933	$	0.33
Diluted EPS Calculation
Effect of dilutive securities	—		334
Net income available for common stock and common stock equivalents	$	17,457	53,267	$	0.33

	Nine Months Ended September 30, 2020
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	138,081	53,084	$	2.60
Diluted EPS Calculation
Effect of dilutive securities	—		229
Net income available for common stock and common stock equivalents	$	138,081	53,313	$	2.59

	Nine Months Ended September 30, 2019
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	135,587	52,883	$	2.56
Diluted EPS Calculation
Effect of dilutive securities	—		346
Net income available for common stock and common stock equivalents	$	135,587	53,229	$	2.55