Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

v3.19.1
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
geographic_area
revenue_source
shares
Mar. 31, 2018
USD ($)
shares
Accounting Policies [Line Items]    
Number of revenue sources | revenue_source 2  
Number of geographic areas in which entity operates | geographic_area 1  
Restricted Stock Awards    
Accounting Policies [Line Items]    
Anti-dilutive effect of equity compensation (in shares) | shares 1,278,489 21,820
Stock Options    
Accounting Policies [Line Items]    
Anti-dilutive effect of equity compensation (in shares) | shares   45,206
Oil    
Accounting Policies [Line Items]    
Sales | $ $ 123.6 $ 79.1
Natural Gas and NGL    
Accounting Policies [Line Items]    
Sales | $ $ 9.1 $ 7.7