Earnings per Share Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2015

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, 2015, 2014 and 2013:

	Year Ended December 31,
(In thousands, except per share amounts)	2015			2014			2013
NUMERATOR
Net income	$	51,763		$	50,789		$	151,423
Preferred stock dividends	(4,875		)	(4,875		)	(3,656		)
Excess of fair value over book value of preferred shares redeemed	—			—			(2,190		)
Net income available to common shareholders	46,888			45,914			145,577
Interest on 3.25% convertible senior subordinated notes due 2017	1,499			1,504			2,443
Interest on 3.00% convertible senior subordinated notes due 2018	2,021			2,030			2,675
Diluted income available to common shareholders	$	50,408		$	49,448		$	150,695
DENOMINATOR
Basic weighted average shares outstanding	24,575			24,463			23,822
Effect of dilutive securities:
Stock option awards	237			222			237
Deferred compensation awards	150			142			123
3.25% convertible senior subordinated notes due 2017	2,416			2,416			2,416
3.00% convertible senior subordinated notes due 2018	2,669			2,669			2,165
Diluted weighted average shares outstanding - adjusted for assumed conversions	30,047			29,912			28,763
Earnings per common share
Basic	$	1.91		$	1.88		$	6.11
Diluted	$	1.68		$	1.65		$	5.24
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share	1,447			1,250			963