March 31,

December 31,

2016

2015

8.50% Senior Notes:

Principal

$

900,000

$

900,000

Debt premiums, net of amortization

9,834

10,503

Debt issuance costs, net of amortization

(5,848

)

(6,274

)

9.00% Term Loan:

Principal

300,000

300,000

Debt discounts, net of amortization

(2,565

)

(2,689

)

Debt issuance costs, net of amortization

(4,468

)

(4,685

)

Revolving bank credit facility

288,000

—

Total long-term debt

1,484,953

1,196,855

Current maturities of long-term debt

138,999

—

Long term debt, less current maturities

$

1,345,954

$

1,196,855