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Acquisitions and Dispositions of Oil and Gas Properties - Additional Information (Detail)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Jan. 31, 2016
a
Well
Jul. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Business Acquisition [Line Items]                            
Property exchange net acres received | a   3,637                        
Property exchange gross wells received | Well   4                        
Property exchange net wells received | a   3.5                        
Property exchange net acres disposed | a   2,547                        
Property exchange gross wells disposed | Well   7                        
Property exchange net wells disposed | a   5.3                        
Gain on property exchange of oil and gas properties                       $ 700    
Net proceeds from sale of oil and gas properties                       2,100    
Loss on sale of oil and gas properties                       1,600    
Impairment of oil and gas properties       $ 2,561 $ 113 $ 1,742 $ 22,718 $ 254,246 $ 544,714 $ 1,984 $ 403 27,134 $ 801,347 $ 60,268
Burleson County, Texas                            
Business Acquisition [Line Items]                            
Net proceeds from sale of oil and gas properties     $ 102,500                      
Loss on sale of oil and gas properties     $ 112,100                      
South Texas                            
Business Acquisition [Line Items]                            
Net proceeds from sale of oil and gas properties $ 25,800                          
Loss on sale of oil and gas properties                       13,400    
Impairment of oil and gas properties             $ 20,800         $ 20,800