Earnings per Share Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2018

Loss per Share [Abstract]

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

The table below presents a reconciliation between basic and diluted weighted average shares outstanding, net income available to common shareholders and basic and diluted income per share for the years ended December 31, 2018, 2017 and 2016:

	Year Ended December 31,
(In thousands, except per share amounts)	2018		2017			2016
NUMERATOR
Net income	$	107,663	$	72,081		$	56,609
Preferred stock dividends (a)	—		(3,656		)	(4,875		)
Excess of fair value over book value of preferred shares redeemed	—		(2,257		)	—
Net income available to common shareholders	107,663		66,168			51,734
Interest on 3.25% convertible senior subordinated notes due 2017 (b)	—		1,106			1,520
Interest on 3.00% convertible senior subordinated notes due 2018 (c)	407		2,113			2,050
Diluted income available to common shareholders	$	108,070	$	69,387		$	55,304
DENOMINATOR
Basic weighted average shares outstanding	28,234		25,769			24,666
Effect of dilutive securities:
Stock option awards	295		342			216
Deferred compensation awards	219		221			149
3.25% convertible senior subordinated notes due 2017 (b)	—		1,687			2,416
3.00% convertible senior subordinated notes due 2018 (c)	430		2,669			2,669
Diluted weighted average shares outstanding - adjusted for assumed conversions	29,178		30,688			30,116
Earnings per common share
Basic	$	3.81	$	2.57		$	2.10
Diluted	$	3.70	$	2.26		$	1.84
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share	381		23			1,273