Derivative Financial Instruments (Details) - Open costless collar contracts $ in Thousands	Mar. 31, 2017 USD ($) MMBTU bbl $ / MMBTU $ / bbl
Summary of contracts for oil and natural gas
Fair Value of Asset (Liability)	$ (4,323)
Oil, Calculation Period 04/01/2017 - 12/31/2017
Summary of contracts for oil and natural gas
Notional Quantity (Bbl or MMBtu) | bbl	3,690,000
Weighted Average Price Floor ($/Bbl or $/MMBtu) | $ / bbl	45.17
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | $ / bbl	55.75
Fair Value of Asset (Liability)	$ (3,493)
Oil, Calculation Period 01/01/2018 - 12/31/2018
Summary of contracts for oil and natural gas
Notional Quantity (Bbl or MMBtu) | bbl	1,920,000
Weighted Average Price Floor ($/Bbl or $/MMBtu) | $ / bbl	43.91
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | $ / bbl	63.44
Fair Value of Asset (Liability)	$ 2,205
Natural Gas, Calculation Period 04/01/2017 - 12/31/2017
Summary of contracts for oil and natural gas
Notional Quantity (Bbl or MMBtu) | MMBTU	18,810,000
Weighted Average Price Floor ($/Bbl or $/MMBtu) | $ / MMBTU	2.51
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | $ / MMBTU	3.60
Fair Value of Asset (Liability)	$ (2,502)
Natural Gas, Calculation Period 01/01/2018 - 12/31/2018
Summary of contracts for oil and natural gas
Notional Quantity (Bbl or MMBtu) | MMBTU	13,200,000
Weighted Average Price Floor ($/Bbl or $/MMBtu) | $ / MMBTU	2.53
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | $ / MMBTU	3.68
Fair Value of Asset (Liability)	$ (533)