Notes Payable (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of debt

Notes payable are summarized as follows:

	December 31,
	2015		2014
7.50% Senior Convertible Notes due 2016	$	46,793	$	55,481
7.50% Senior Exchange Convertible Notes due 2016	—		44,475
8.50% Senior Notes due 2019	200,000		200,000
6.00% Senior Convertible Notes due 2020, net of discount	79,930		—
Senior Secured Credit Facility	—		—
Total	$	326,723	$	299,956

Maturities of notes payable

Maturities of notes payable as of December 31, 2015 are as follows (in thousands):

	Total
2016	$	46,793
2017	—
2018	—
2019	200,000
2020	79,930
Thereafter	—
Total	$	326,723