EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2019

EARNINGS PER SHARE [Line Items]

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

	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

	Three Months Ended September 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	16,276	52,736	$	0.31
Diluted EPS Calculation
Effect of dilutive securities	—		376
Net income available for common stock and common stock equivalents	$	16,276	53,112	$	0.31

	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

	Nine Months Ended September 30, 2018
	Income		Shares	Per Share Amount
	(Thousands, except per share amounts)
Basic EPS Calculation
Net income available for common stock	$	127,530	52,678	$	2.42
Diluted EPS Calculation
Effect of dilutive securities	—		291
Net income available for common stock and common stock equivalents	$	127,530	52,969	$	2.41