XML 39 R56.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2019
USD ($)
counterparty
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Property, Plant and Equipment [Line Items]      
Allowance for doubtful accounts $ 1,259,000 $ 1,526,000  
Capitalized interest costs 12,000,000.0 17,200,000 $ 12,800,000
Amount of capitalized exploratory well costs that have been capitalized for period greater than one year $ 0    
Derivative, number of counterparties | counterparty 9    
Past-due receivables from counterparties $ 0    
Unrecognized tax benefits $ 0 $ 0  
Restricted stock awards      
Property, Plant and Equipment [Line Items]      
Restricted stock awards vesting period 3 years    
Produced and flowback water disposal facilities, natural gas processing plants and pipelines      
Property, Plant and Equipment [Line Items]      
Estimated life of assets 30 years    
Building      
Property, Plant and Equipment [Line Items]      
Estimated life of assets 20 years    
Furniture, software and equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Estimated life of assets 2 years    
Furniture, software and equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Estimated life of assets 7 years    
Long Term Incentive Plan (LTIP) | Phantom units      
Property, Plant and Equipment [Line Items]      
Vesting period 3 years