Note 13 - Fair Value Measurements and Disclosures (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		Fair Value Measurements Using:
	Balance Sheet	Quoted Prices in Active Markets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Location	(Level 1)		(Level 2)		(Level 3)
		(in thousands)
September 30, 2013
Financial Liabilities
Derivative Financial Instruments
	Current Liabilities	$	-	$	-	$	-
	Non-current Liabilities		-		-		-
		$	-	$	-	$	-
December 31, 2012
Financial Liabilities
Derivative Financial Instruments
	Current Liabilities	$	-	$	2,984	$	-
	Non-current Liabilities		-		-		-
		$	-	$	2,984	$	-

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	September 30, 2013				December 31, 2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)				(in thousands)
Convertible Notes, 8.5%, due October 2017, net of discount of ($19.3) million at September 30, 2013 and none at December 31, 2012 (1)	$	124,457	$	135,125	$	-	$	-
Convertible Notes, 6.5%, due March 2015, net of discount of ($5.3) million at September 30, 2013 and ($17.4) million at December 31, 2012 (2)		80,655		79,448		153,479		147,861