Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable and Revenues from Contracts with Customers - Additional Information (Details)

v3.21.1
Accounts Receivable and Revenues from Contracts with Customers - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2021
USD ($)
Customer
Mar. 31, 2020
USD ($)
Customer
Jun. 30, 2020
Dec. 31, 2020
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Retained earnings (Accumulated deficit) $ (4,218)     $ 9,354
Accounts Receivable, Allowance for Credit Loss 364     197
Accounts Receivable, Credit Loss Expense (Reversal) 167      
Accounts Receivable, Allowance for Credit Loss, Writeoff $ 0      
Name of Major Customer [Domain]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commodity Products, Number of Customers | Customer 16      
Financing Receivable, Credit Risk Percentage 0.00%      
Joint Interest Partners, Mutual Operators [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commodity Products, Number of Customers | Customer 2      
Financing Receivable, Credit Risk Percentage 5.00%      
Accounts Receivable, Allowance for Credit Loss $ 2     9
Accounts Receivable, Credit Loss Expense (Reversal) (7)      
Accounts Receivable, Allowance for Credit Loss, Writeoff $ 0      
Joint Interest Partners, Large Partners [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commodity Products, Number of Customers | Customer 5      
Financing Receivable, Credit Risk Percentage 2.00%      
Accounts Receivable, Allowance for Credit Loss $ 289     87
Accounts Receivable, Credit Loss Expense (Reversal) 202      
Accounts Receivable, Allowance for Credit Loss, Writeoff $ 0      
Joint Interest Partners, All Others [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Commodity Products, Number of Customers | Customer 15      
Financing Receivable, Credit Risk Percentage 10.00%      
Financing Receivable, Past Due       200
Accounts Receivable, Allowance for Credit Loss $ 73     101
Accounts Receivable, Credit Loss Expense (Reversal) (28)      
Accounts Receivable, Allowance for Credit Loss, Writeoff $ 0      
Accounts Receivable | Credit Concentration Risk        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Concentration risk, percentage 45.00%   61.00%  
Accounts receivable, major customers $ 23,500     $ 24,100
Accounts Receivable | Customer Concentration Risk [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of major customers | Customer 3 4    
Revenues, major customers $ (54,100) $ (66,500)    
Concentration risk, percentage 61.00% 73.00%    
Accounts Receivable | Customer Concentration Risk [Member] | Major Customer 1        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenues, major customers $ (23,000)      
Concentration risk, percentage 26.00%      
Accounts Receivable | Customer Concentration Risk [Member] | Major Customer 2        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenues, major customers $ (20,100)      
Concentration risk, percentage 23.00%      
Accounts Receivable | Customer Concentration Risk [Member] | Major Customer 3        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Revenues, major customers $ (11,000)      
Concentration risk, percentage 12.00%