Note 4 - Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(Dollars in thousands, except per share amounts)
Numerator:
Net income	$	56,463		$	43,136		$	94,622		$	64,960
Less: Net income allocated to preferred shareholder		(13,496	)		(14,293	)		(22,650	)		(23,991	)
Less: Net income allocated to unvested restricted stock		(77	)		(66	)		(134	)		(82	)
Net income available to common stockholders for basic earnings per common share		42,890			28,777			71,838			40,887
Effect of dilutive securities:
Net income allocated to preferred shareholder		13,496			14,293			22,650			23,991
Interest on 1¼% convertible senior notes due 2032, included in cost of sales		41			41			204			204
Net income available to common and preferred stock for diluted earnings per share	$	56,427		$	43,111		$	94,692		$	65,082
Denominator:
Weighted average basic common shares outstanding		279,075,416			243,171,726			278,514,992			228,749,443
Weighted average additional common shares outstanding if preferred shares converted to common shares (if dilutive		87,812,786			120,779,819			87,812,786			134,221,626
Total weighted average common shares outstanding if preferred shares converted to common shares		366,888,202			363,951,545			366,327,778			362,971,069
Effect of dilutive securities:
Stock options and stock appreciation rights		6,339,326			7,224,120			6,624,087			7,211,767
1¼% convertible senior notes due 2032		31,312,850			31,312,850			31,312,850			31,312,850
Weighted average diluted shares outstanding		404,540,378			402,488,515			404,264,715			401,495,686
Income per common share:
Basic	$	0.15		$	0.12		$	0.26		$	0.18
Diluted	$	0.14		$	0.11		$	0.23		$	0.16