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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash Flows from Operating Activities:    
Net (Loss) Income $ (2,363) $ 3,659
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion on discounted liabilities 28,176 36,156
Gain on sale of properties (15,836) (4,574)
Unrealized loss (gain) on derivative instruments 190 2,777
Provision for deferred income taxes 443 3,096
Changes in assets and liabilities:    
Accounts receivable 7,139 601
Due to related parties 38 (5)
Prepaid expenses and other assets 58 15
Accounts payable (1,417) (2,919)
Accrued liabilities (49) (11,595)
Net Cash Provided by Operating Activities 16,379 27,211
Cash Flows from Investing Activities:    
Capital expenditures, including exploration expense (10,523) (18,046)
Proceeds from sale of properties and equipment 10,862 4,579
Net Cash (Used in) provided by Investing Activities 339 (13,467)
Cash Flows from Financing Activities:    
Purchase of stock for treasury (710) (5,488)
Purchase of non-controlling interests (742) (499)
Increase in long-term bank debt and other long-term obligations 6,755 25,000
Repayment of long-term bank debt and other long-term obligations (21,983) (37,745)
Distribution to non-controlling interest (57) (312)
Net Cash (used in) provided by Financing Activities (16,737) (19,044)
Cash and Cash Equivalents Period Decrease (19) (5,300)
Cash and Cash Equivalents at the Beginning of the Year 1,015 6,315
Cash and Cash Equivalents at the End of the Year 996 1,015
Supplemental Disclosures:    
Income taxes paid during the year 1 65
Interest paid during the year 2,052 3,659
Purchase of non-controlling interest 36 $ 111
Distribution of non-controlling interest in liquidated partnerships $ 1,550