XML 83 R61.htm IDEA: XBRL DOCUMENT v3.20.4
Financial Instruments - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Oil and Natural Gas Derivatives    
Debt Instrument [Line Items]    
Carrying Amount $ (67,814) $ (11,594)
Fair Value (67,814) (11,594)
11.00% Second-Priority Senior Secured Notes – due April 2022    
Debt Instrument [Line Items]    
Carrying Amount [1] 343,579 383,871
Fair Value [1] 355,935 401,128
7.50% Senior Notes – due May 2022    
Debt Instrument [Line Items]    
Carrying Amount 6,060 6,060
Fair Value 5,238 5,030
Bank Credit Facility – matures May 2022    
Debt Instrument [Line Items]    
Carrying Amount [1] 635,873 343,050
Fair Value [1] $ 640,000 $ 350,000
[1] The carrying amounts are net of discount and deferred financing costs.