Note 10 - Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2015

Debt Instrument [Line Items]

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

The carrying value of our long-term debt at September 30, 2015 and December 31, 2014 was as follows:

(In thousands)		September 30, 2015		December 31, 2014
9.000%	Senior Notes due 2017	$	191,752	$	190,245
3.000%	Convertible Senior Notes due 2017	52,754		371,336
2.250%	Convertible Senior Notes due 2019	346,443		336,133
5.500%	Senior Notes due 2019	295,472		294,585
5.250%	Senior Notes due 2020	343,825		—
	Total long-term debt	$	1,230,246	$	1,192,299

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)	September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014
Liability component:
Principal	$	60,899		$	450,000		$	399,992		$	400,000
Debt discount, net (1)	(7,737		)	(74,690		)	(48,647		)	(57,989		)
Debt issuance costs (1)	(408		)	(3,974		)	(4,902		)	(5,878		)
Net carrying amount	$	52,754		$	371,336		$	346,443		$	336,133
Equity component of currently redeemable convertible senior notes	$	7,737		$	74,690		$	—		$	—

__________________

(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
	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2015		2014		2015		2014
Contractual interest expense	$	456	$	3,375	$	6,953	$	10,125
Amortization of debt issuance costs	43		308		659		912
Amortization of debt discount	808		5,441		11,910		15,939
Total interest expense	$	1,307	$	9,124	$	19,522	$	26,976

	Convertible Senior Notes due 2019
	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2015		2014		2015		2014
Contractual interest expense	$	2,250	$	2,250	$	6,750	$	6,750
Amortization of debt issuance costs	317		322		975		957
Amortization of debt discount	3,146		2,980		9,342		8,803
Total interest expense	$	5,713	$	5,552	$	17,067	$	16,510

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