Note 10 - Debt Obligations (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Debt [Table Text Block]

	June 30, 2014		December 31, 2013
	(in thousands)
Convertible Notes, 8.5%, due October 2017, net of discount of ($15.9) million at June 30, 2014 and ($18.3) million at December 31, 2013	$	152,787	$	125,416
Convertible Notes, 6.5%, due March 2015, net of discount of ($1.7) million at June 30, 2014 and ($4.4) million at December 31, 2013		58,169		81,523
		210,956		206,939
Less: Current maturity of long-term debt		58,169		-
Long-term debt, net	$	152,787	$	206,939

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

Year
2014	$	7,170
2015		14,340
2016		14,340
2017		183,051
Total estimated remaining cash payments related to the 2017 Convertible Notes	$	218,901

Year
2014	$	1,946
2015		61,837
Total estimated remaining cash payments related to the 2015 Convertible Notes	$	63,783

Schedule of Convertible Debt Interest Expense [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2014		2013		2014		2013
	(in thousands)
Interest expense related to the contractual interest coupon	$	3,530	$	-	$	6,585	$	-
Amortization of debt discount expense		994		-		1,953		-
Amortization of debt issue costs		157		-		292		-
Interest expense related to the 2017 Convertible Notes	$	4,681	$	-	$	8,830	$	-

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2014		2013		2014		2013
	(in thousands)
Interest expense related to the contractual interest coupon	$	1,043	$	2,777	$	2,439	$	5,555
Amortization of debt discount expense		707		1,862		1,592		3,653
Amortization of debt issue costs		187		250		426		495
Interest expense related to the 2015 Convertible Notes	$	1,937	$	4,889	$	4,457	$	9,703

Schedule of Interest Expense [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
	(in thousands)
Interest expense	$	6,593		$	6,652		$	13,300		$	13,569
Capitalized interest expense		(3,080	)		(2,372	)		(5,950	)		(4,991	)
Interest expense, net	$	3,513		$	4,280		$	7,350		$	8,578