Long-Term Debt (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	May 19, 2016 USD ($)
Line of Credit Facility [Line Items]
Amortization of debt issuance costs	$ 128	$ 123
Unamortized debt issue costs	1,600		$ 1,700
Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity	215,100
Sub-limit which may be used for issuance of letters of credit	$ 15,000
Borrowing base amount				$ 200,000
Commitment fee on unutilized borrowing base	0.50%
Credit Agreement | Second full quarter after Catarina acquisition
Line of Credit Facility [Line Items]
Borrowing base multiplier	4.5
Credit Facility Maturing March 31, 2020
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000
lender loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 200,000
Minimum | Credit Agreement
Line of Credit Facility [Line Items]
Consolidated current asset ratio	1.0
Required interest coverage ratio	2.5
Exceeding of reserve-based credit facility over borrowing base (as a percent)	90.00%
Ownership percentage by subsidiary	50
Minimum | Credit Agreement | Scenario One
Line of Credit Facility [Line Items]
Debt to Adjusted EBITDA ratio	4.5
Minimum | Credit Agreement | Scenario Two
Line of Credit Facility [Line Items]
Debt to Adjusted EBITDA ratio	4.0
Minimum | Credit Agreement | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Variable interest rate	2.25%
Minimum | Credit Agreement | ABR
Line of Credit Facility [Line Items]
Variable interest rate	1.25%
Maximum | Credit Agreement | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Variable interest rate	3.25%
Maximum | Credit Agreement | ABR
Line of Credit Facility [Line Items]
Variable interest rate	2.25%