Quarterly report pursuant to Section 13 or 15(d)

Debt (Narrative 2) (Detail)

v3.5.0.2
Debt (Narrative 2) (Detail)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 18 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
Jun. 30, 2018
Interest expense $ (1,470) $ (344) $ (1,959) $ (654)    
Incurred interest expense $ 387 372 $ 773 740    
Debt instrument interest rate spread     5.75%      
Capitalized interest expense   $ 288   $ 506    
Interest rate on outstanding borrowings 4.38% 4.03% 4.37% 4.02%    
Write off of Deferred Debt Issuance Cost $ 869   $ 869      
Amortization Of Financing Costs     1,076 $ 311    
Notes Payable, Fair Value Disclosure 15,000   15,000      
Interest Expense, Other 111 $ 107 111 10    
Term Loan [Member]            
Notes Payable to Bank 15,000   15,000      
Additional Term Loan [Member]            
Notes Payable to Bank         $ 5,000  
Revolving Credit Facility [Member]            
Amortization Of Financing Costs $ 103 $ 153 $ 206 $ 313    
Maximum [Member]            
Ratio of net debt to EBITDAX         5.0 3.0