Note 4 - Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
	(Dollars in thousands, except per share amounts)
Numerator:
Net income	$	56,599		$	58,935		$	151,221		$	123,895
Less: Net income allocated to preferred shareholder		(13,511	)		(14,166	)		(36,165	)		(40,353	)
Less: Net income allocated to unvested restricted stock		(77	)		(90	)		(211	)		(169	)
Net income available to common stockholders for basic earnings per common share		43,011			44,679			114,845			83,373
Effect of dilutive securities:
Net income allocated to preferred shareholder		13,511			14,166			36,165			40,353
Interest on 1¼% convertible senior notes due 2032, included in cost of sales		41			41			490			490
Net income available to common and preferred stock for diluted earnings per share	$	56,563		$	58,886		$	151,500		$	124,216
Denominator:
Weighted average basic common shares outstanding		279,547,711			276,966,995			278,863,014			244,998,581
Weighted average additional common shares outstanding if preferred shares converted to common shares (if dilutive)		87,812,786			87,812,786			87,812,786			118,582,017
Total weighted average common shares outstanding if preferred shares converted to common shares		367,360,497			364,779,781			366,675,800			363,580,598
Effect of dilutive securities:
Stock options and stock appreciation rights		6,256,363			6,617,253			6,515,939			6,878,447
1¼% convertible senior notes due 2032		31,312,850			31,312,850			31,312,850			31,312,850
Weighted average diluted shares outstanding		404,929,710			402,709,884			404,504,589			401,771,895
Income per common share:
Basic	$	0.15		$	0.16		$	0.41		$	0.34
Diluted	$	0.14		$	0.15		$	0.37		$	0.31