Debt, net of unamortized discounts, premiums, and deferred costs of $157.9 million and $342.6 million, and including the fair value of debt derivatives of $9.8 million and $32.3 million, at March 31, 2016 and December 31, 2015, respectively, consists of the following (in thousands):



	March 31, 2016		December 31, 2015
Senior credit facility	$	488,900	$	—
8.75% Senior Secured Notes due 2020	1,267,924		1,265,814
Senior Unsecured Notes
8.75% Senior Notes due 2020	389,645		389,232
7.5% Senior Notes due 2021	751,416		751,087
8.125% Senior Notes due 2022	519,026		518,693
7.5% Senior Notes due 2023	535,191		534,869
Convertible Senior Unsecured Notes
8.125% Convertible Senior Notes due 2022	14,692		78,290
7.5% Convertible Senior Notes due 2023	14,577		24,393
Total debt	3,981,371		3,562,378
Less: current maturities of long-term debt(1)	3,981,371		—
Long-term debt	$	—	$	3,562,378

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(1)	Due to existing and anticipated covenant violations, the Company’s long-term debt was classified as current at March 31, 2016. See Note 2 for further discussion of such covenant violations.