Debt (Tables)

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Schedule of Notes Payable

Our notes payable are summarized as follows (in thousands):     

	June 30, 2015		December 31, 2014
7.50% Senior Convertible Notes due 2016	46,793		55,481
7.50% Senior Exchange Convertible Notes due 2016	8,546		44,475
8.50% Senior Notes due 2019	200,000		200,000
6.00% Senior Convertible Notes due 2020, net of discount	79,872		—
Senior Secured Credit Facility	—		—
Total	$	335,211	$	299,956