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Consolidated Statements Of Cash Flows - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net income (loss) | $ 81,836,000 | $ (48,181,000) | $ 2,563,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Loss from discontinued operations, net of tax | 98,000 | 98,000 | (5,411,000)
Depreciation, depletion and amortization | 21,060,000 | 9,382,000 | 7,083,000
Bargain purchase gain | (7,651,000) |  |
Impairment of proved crude oil and natural gas properties | 0 | 30,625,000 |
Gain on revision of asset retirement obligations |  |  | (379,000)
Other amortization |  | 181,000 | 241,000
Deferred taxes | (39,978,000) | 24,159,000 | 14,480,000
Unrealized foreign exchange (gain) loss | (291,000) | 91,000 | (50,000)
Stock-based compensation | 2,459,000 | 114,000 | 3,506,000
Cash settlements paid on exercised stock appreciation rights | (3,271,000) | (275,000) | (491,000)
Derivative instruments (gain) loss, net | 22,826,000 | (6,577,000) | 446,000
Cash settlements received (paid) on matured derivative contracts, net | (18,020,000) | 7,216,000 | 2,439,000
Bad debt expense and other | 875,000 | 1,165,000 | (341,000)
Other operating loss, net | 440,000 | 869,000 | 58,000
Operational expenses associated with equipment and other | 2,415,000 | 1,601,000 | 69,000
Cash advance for other long-term assets | (1,176,000) |  |
Change in operating assets and liabilities: |  |  |
Trade receivables | (11,308,000) | 14,335,000 | (2,428,000)
Accounts with joint venture owners | 1,594,000 | 4,016,000 | (2,075,000)
Other receivables | (9,736,000) | 1,405,000 | (94,000)
Crude oil inventory | 5,022,000 | (2,834,000) | (287,000)
Prepayments and other | 1,617,000 | (1,126,000) | (1,014,000)
Value added tax and other receivables | (1,593,000) | (1,268,000) | 275,000
Accounts payable | (922,000) | (842,000) | 6,011,000
Foreign income taxes receivable/payable | 2,268,000 | (4,880,000) | 2,396,000
Accrued liabilities and other | 1,645,000 | (1,383,000) | 4,161,000
Net cash provided by continuing operating activities | 50,209,000 | 27,891,000 | 31,158,000
Net cash used in discontinued operating activities | (92,000) | (441,000) | (4,686,000)
Net cash provided by operating activities | 50,117,000 | 27,450,000 | 26,472,000
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Property and equipment expenditures | (16,558,000) | (20,008,000) | (10,348,000)
Acquisition of crude oil and natural gas properties | (22,505,000) | (4,320,000) |
Net cash used in continuing investing activities | (39,063,000) | (24,328,000) | (10,348,000)
Net cash used in discontinued investing activities |  |  |
Net cash used in investing activities | (39,063,000) | (24,328,000) | (10,348,000)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from the issuances of common stock | 1,369,000 | 63,000 | 256,000
Treasury shares | (1,426,000) | (992,000) | (3,911,000)
Net cash used in continuing financing activities | (57,000) | (929,000) | (3,655,000)
Net cash used in discontinued financing activities |  |  |
Net cash used in financing activities | (57,000) | (929,000) | (3,655,000)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | 10,997,000 | 2,193,000 | 12,469,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD | 61,317,000 | 59,124,000 | 46,655,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD | 72,314,000 | 61,317,000 | 59,124,000
Supplemental disclosure of cash flow information: |  |  |
Income taxes (received) paid in cash |  | (696,000) | (674,000)
Income taxes paid in-kind with crude oil | 20,103,000 | 8,738,000 | 7,268,000
Supplemental disclosure of non-cash investing and financing activities: |  |  |
Property and equipment additions incurred but not paid at end of period | 15,021,000 | 3,966,000 | 13,646,000
Recognition of right-of-use operating lease assets and liabilities | 581,000 | 1,478,000 | 44,681,000
Recognition of right-of-use operating lease liabilities | 581,000 | 1,478,000 | 44,656,000
Asset retirement obligations | $ 21,733,000 | $ 359,000 | 595,000
Restricted stock issued out of treasury |  |  | $ 309,000

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- Definition Amount of cash paid to settle liability for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration