Note 10 - Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2016

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

The carrying value of our long-term debt at March 31, 2016 and December 31, 2015 was as follows:

(In thousands)		March 31, 2016		December 31, 2015
9.000%	Senior Notes due 2017	$	192,783	$	192,261
3.000%	Convertible Senior Notes due 2017	19,931		46,115
2.250%	Convertible Senior Notes due 2019	89,785		341,214
5.500%	Senior Notes due 2019	296,033		295,751
5.250%	Senior Notes due 2020	344,406		344,113
7.000%	Senior Notes due 2021	343,528		—
	Total long-term debt	$	1,286,466	$	1,219,454

Schedule of Liability and Equity Components of Convertible Debt [Table Text Block]

The convertible notes are reflected on our condensed consolidated balance sheets as follows:

	Convertible Senior Notes due 2017						Convertible Senior Notes due 2019
(In thousands)	March 31, 2016			December 31, 2015			March 31, 2016			December 31, 2015
Liability component:
Principal	$	22,233		$	52,370		$	101,581		$	389,992
Debt discount, net (1)	(2,187		)	(5,941		)	(10,716		)	(44,313		)
Debt issuance costs (1)	(115		)	(314		)	(1,080		)	(4,465		)
Net carrying amount	$	19,931		$	46,115		$	89,785		$	341,214

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(1) Included within long-term debt and is being amortized over the life of the convertible notes.

Schedule of Interest Expense Recognized Related to Convertible Debt [Table Text Block]

The following tables set forth total interest expense recognized related to the convertible notes for the periods indicated:

	Convertible Senior Notes due 2017				Convertible Senior Notes due 2019
	Three Months Ended March 31,				Three Months Ended March 31,
($ in thousands)	2016		2015		2016		2015
Contractual interest expense	$	372	$	3,375	$	2,013	$	2,250
Amortization of debt issuance costs	37		318		293		328
Amortization of debt discount	708		5,708		2,909		3,073
Total interest expense	$	1,117	$	9,401	$	5,215	$	5,651