Note 11 - Long-Term Debt Level 3 (Tables)

12 Months Ended

Dec. 31, 2015

Debt Instrument [Line Items]

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

The carrying value of our long-term debt at December 31, 2015 and 2014 was as follows:

		December 31,
($ in thousands)		2015		2014
9.000%	Senior Notes due 2017	$	192,261	$	190,245
3.000%	Convertible Senior Notes due 2017	46,115		371,336
2.250%	Convertible Senior Notes due 2019	341,214		336,133
5.500%	Senior Notes due 2019	295,751		294,585
5.250%	Senior Notes due 2020	344,113		—
	Total long-term debt	$	1,219,454	$	1,192,299

Convertible Debt [Table Text Block]

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

	Convertible Senior Notes due 2017						Convertible Senior Notes due 2019
	December 31,						December 31,
(In thousands)	2015			2014			2015			2014
Liability component:
Principal	$	52,370		$	450,000		$	389,992		$	400,000
Debt discount, net (1)	(5,941		)	(74,690		)	(44,313		)	(57,989		)
Debt issuance costs (1)	(314		)	(3,974		)	(4,465		)	(5,878		)
Net carrying amount	$	46,115		$	371,336		$	341,214		$	336,133

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

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

	Convertible Senior Notes due 2017				Convertible Senior Notes due 2019
	December 31,				December 31,
	2015		2014		2015		2014
(In thousands)
Contractual interest expense	$	7,359	$	13,500	$	8,925	$	9,000
Amortization of debt issuance costs	696		1,226		1,292		1,282
Amortization of debt discount	12,621		21,512		12,487		11,829
Total interest expense	$	20,676	$	36,238	$	22,704	$	22,111

Accounting Standards Update 2015-03 [Member]

Debt Instrument [Line Items]

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

The following illustrates the impact of the reclassification:

		December 31, 2014
(In thousands)		As Previously Reported		Adjustment			As Adjusted
9.000%	Senior Notes due 2017	$	192,605	$	(2,360	)	$	190,245
3.000%	Convertible Senior Notes due 2017	375,310		(3,974		)	371,336
2.250%	Convertible Senior Notes due 2019	342,011		(5,878		)	336,133
5.500%	Senior Notes due 2019	300,000		(5,415		)	294,585
	Total long-term debt	$	1,209,926	$	(17,627	)	$	1,192,299