Note 14 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity Note [Abstract]

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

	Year Ended December 31,
	2014			2013			2012
	(in thousands, except per share data)
Net loss	$	(107,906	)	$	(57,711	)	$	(39,089	)
Shares:
Basic weighted average common shares outstanding		116,311			115,943			115,631
Incremental shares from assumed conversion of dilutive share based awards		-			-			-
Diluted weighted average common shares outstanding		116,311			115,943			115,631
Excluded share based awards (1) (2)		7,707			7,413			6,723
Excluded 2017 convertible debt shares (1)		42,108			35,878			-
Excluded 2015 convertible debt shares (1)		10,122			14,516			28,890
Basic net loss per share	$	(0.93	)	$	(0.50	)	$	(0.34	)
Diluted net loss per share	$	(0.93	)	$	(0.50	)	$	(0.34	)

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	For the Year Ended December 31,
	2014		2013		2012
	(in thousands)
Employee stock-based compensation costs	$	2,426	$	2,189	$	2,283
Director stock-based compensation costs		730		606		532
Employee stock purchase plan costs		7		11		26
Total stock-based compensation costs	$	3,163	$	2,806	$	2,841

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

				Weighted—
	Number of			Average
	Restricted			Fair Value
	Shares			Per Share
Outstanding at the beginning of the year		1,490,555		$	3.00
Granted		1,109,230			2.18
Vested		(297,787	)		4.00
Forfeited or expired		(98,676	)		2.49
Outstanding at the end of the year		2,203,322		$	2.47

Share-based Compensation, Performance Shares Award Outstanding Activity [Table Text Block]

	Number of
	Relative
	Performance		Fair Value
	Stock Units		Per Share
Outstanding at the beginning of the year		-	$	-
Granted		225,695		2.12
Vested		-		-
Forfeited or expired		-		-
Outstanding at the end of the year		225,695	$	2.12

	Number of
	Absolute
	Performance		Fair Value
	Stock Units		Per Share
Outstanding at the beginning of the year		-	$	-
Granted		225,694		0.80
Vested		-		-
Forfeited or expired		-		-
Outstanding at the end of the year		225,694	$	0.80

Schedule of Share-based Payment Award, Performance Units, Valuation Assumptions [Table Text Block]

	2014			2013		2012
Expected life (years) (a)		2.9			-		-
Risk-free interest rate (c)		0.67	%		-		-
Volatility (b)		64.6	%		-		-
Dividend yield (d)		-			-		-

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2014		2013			2012
Expected life (years) (a)		-		5.1			4.2
Risk-free interest rate (c)		-		0.8	%		0.8	%
Volatility (b)		-		82.5	%		85.8	%
Dividend yield (d)		-		-			-
Weighted-average fair value per share at grant date	$	-	$	1.78		$	2.48

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

						Weighted-
				Weighted—		Average
				Average		Remaining		Aggregate
	Number of			Exercise Price		Contractual		Intrinsic
	Options			Per Option		Term		Value
Outstanding at the beginning of the year		5,922,709		$	7.70
Granted		-			-
Exercised		(99,248	)		1.30
Forfeited or expired		(319,922	)		7.57
Outstanding at the end of the year		5,503,539		$	7.83		4.47	$	-
Exercisable at the end of the year		4,997,760		$	8.31		4.11	$	-

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

					Outstanding						Exercisable
							Weighted-
							Average
							Remaining						Weighted-
							Contractual						Average
Range of					Number of		Life		Weighted		Number of		Exercise Price
Exercise Prices					Options		(In years)		Exercise Price		Options		Per Option
	Below	to	$	4.23		1,698,127		5.8	$	3.32		1,192,348	$	3.45
$	4.24	to	$	6.35		1,372,231		4.5		5.08		1,372,231		5.08
$	6.36	to	$	8.47		614,181		4.9		6.45		614,181		6.45
$	8.48	to	$	10.58		182,500		3.0		10.21		182,500		10.21
$	10.59	to	$	25.53		1,636,500		3.1		15.06		1,636,500		15.06
Total						5,503,539		4.5	$	7.83		4,997,760	$	8.31

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	2014			2013			2012
Expected life (months)		3			3			3
Risk-free interest rate		0.04	%		0.06	%		0.08	%
Volatility		24.4	%		25.4	%		35.3	%
Dividend yield		-			-			-
Weighted-average fair value of grants	$	0.33		$	0.38		$	0.58
Shares purchased during year		21,183			26,460			40,011
Average number of participants per quarter		6			5			12