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Selected Quarterly Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Selected Quarterly Financial Information [Abstract] |
Summary of Quarterly Financial Information | ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Three Months Ended
﻿ |  | March 31, |  | June 30, |  | September 30, |  | December 31,
﻿ |  | (in thousands of dollars except per share information)
﻿2018: |  |  |  |  |  |  |  |  |  |  |  |
﻿Total revenues |  | $ | 27,645 |  | $ | 24,426 |  | $ | 25,266 |  | $ | 27,606
﻿Total operating costs and expenses |  |  | 14,631 |  |  | 19,017 |  |  | 7,940 |  |  | 12,433
﻿Operating income |  |  | 13,038 |  |  | 5,723 |  |  | 17,320 |  |  | 15,206
﻿Income from continuing operations |  |  | 8,711 |  |  | 887 |  |  | 78,626 |  |  | 10,504
﻿Loss from discontinued operations |  |  | (52) |  |  | (343) |  |  | (21) |  |  | (80)
﻿Net income |  |  | 8,659 |  |  | 544 |  |  | 78,605 |  |  | 10,424
﻿Basic net income per share |  | $ | 0.15 |  | $ | 0.02 |  | $ | 1.31 |  | $ | 0.17
﻿Diluted net income per share |  | $ | 0.15 |  | $ | 0.02 |  | $ | 1.28 |  | $ | 0.17
﻿Basic income from continuing operations per share |  | $ | 0.15 |  | $ | 0.02 |  | $ | 1.31 |  | $ | 0.17
﻿Diluted income from continuing operations per share |  | $ | 0.15 |  | $ | 0.02 |  | $ | 1.28 |  | $ | 0.17
﻿ As discussed further in Note 8, deferred income tax expense (benefit) for the three months ended September 30 and December 31, 2018 included $(66.6) million and $9.0 million, respectively, related to the recognition of deferred tax assets as well as adjustments to valuation allowances. ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Three Months Ended
﻿ |  | March 31, |  | June 30, |  | September 30, |  | December 31,
﻿ |  | (in thousands of dollars except per share information)
﻿2017: |  |  |  |  |  |  |  |  |  |  |  |
﻿Total revenues |  | $ | 21,266 |  | $ | 20,425 |  | $ | 18,178 |  | $ | 17,156
﻿Total operating costs and expenses |  |  | 13,055 |  |  | 15,068 |  |  | 14,454 |  |  | 14,413
﻿Operating income |  |  | 8,148 |  |  | 5,587 |  |  | 3,721 |  |  | 2,495
﻿Income (loss) from continuing operations |  |  | 4,435 |  |  | 2,451 |  |  | (148) |  |  | 3,534
﻿Loss from discontinued operations |  |  | (176) |  |  | (168) |  |  | (174) |  |  | (103)
﻿Net income (loss) |  |  | 4,259 |  |  | 2,283 |  |  | (322) |  |  | 3,431
﻿Basic net income (loss) per share |  | $ | 0.07 |  | $ | 0.04 |  | $ | 0.00 |  | $ | 0.06
﻿Diluted net income (loss) per share |  | $ | 0.07 |  | $ | 0.04 |  | $ | 0.00 |  | $ | 0.06
﻿Basic income (loss) from continuing operations per share |  | $ | 0.07 |  | $ | 0.04 |  | $ | 0.00 |  | $ | 0.06
﻿Diluted income (loss) from continuing operations per share |  | $ | 0.07 |  | $ | 0.04 |  | $ | 0.00 |  | $ | 0.06
﻿
Schedule Of Error Correction |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | As of September 30, 2018
﻿ |  | As Previously Reported |  | Adjustments |  | As Restated
﻿ASSETS |  |  |  |  |
﻿Current assets: |  |  |  |  |  |  |  |  |
﻿Cash and cash equivalents |  | $ | 33,715 |  | $ | — |  | $ | 33,715
﻿Restricted cash |  |  | 1,025 |  |  | — |  |  | 1,025
﻿Receivables: |  |  |  |  |  |  |  |  |
﻿Trade |  |  | — |  |  | — |  |  | —
﻿Accounts with joint venture owners, net of allowance of $0.5 million |  |  | 931 |  |  | — |  |  | 931
﻿Other |  |  | 408 |  |  | — |  |  | 408
﻿Crude oil inventory |  |  | 2,232 |  |  | — |  |  | 2,232
﻿Prepayments and other |  |  | 3,058 |  |  | — |  |  | 3,058
﻿Current assets - discontinued operations |  |  | 3,222 |  |  | — |  |  | 3,222
﻿Total current assets |  |  | 44,591 |  |  | — |  |  | 44,591
﻿Oil and natural gas properties, at cost - successful efforts method: |  |  |  |  |  |  |  |  |
﻿Proved properties |  |  | 398,072 |  |  | 11,539 |  |  | 409,611
﻿Unproved properties |  |  | 16,698 |  |  | 7,073 |  |  | 23,771
﻿Equipment and other |  |  | 8,821 |  |  | — |  |  | 8,821
﻿ |  |  | 423,591 |  |  | 18,612 |  |  | 442,203
﻿Accumulated depreciation, depletion, amortization and impairment |  |  | (388,660) |  |  | — |  |  | (388,660)
﻿Net oil and natural gas properties, equipment and other |  |  | 34,931 |  |  | 18,612 |  |  | 53,543
﻿Other noncurrent assets: |  |  |  |  |  |  |  |  |
﻿Restricted cash |  |  | 918 |  |  | — |  |  | 918
﻿Value added tax and other receivables, net of allowance of $2.1 million |  |  | 2,306 |  |  | — |  |  | 2,306
﻿Deferred tax assets |  |  | 68,807 |  |  | (18,612) |  |  | 50,195
﻿Abandonment funding |  |  | 10,808 |  |  | — |  |  | 10,808
﻿Total assets |  | $ | 162,361 |  | $ | — |  | $ | 162,361
﻿ |  |  |  |  |  |  |  |  |
﻿LIABILITIES AND SHAREHOLDERS' EQUITY |  |  |  |  |  |  |  |  |
﻿Current liabilities: |  |  |  |  |  |  |  |  |
﻿Accounts payable |  | $ | 7,219 |  | $ | — |  | $ | 7,219
﻿Accounts with joint venture owners |  |  | 5,496 |  |  | — |  |  | 5,496
﻿Accrued liabilities and other |  |  | 17,662 |  |  | — |  |  | 17,662
﻿Foreign taxes payable |  |  | 1,775 |  |  | — |  |  | 1,775
﻿Current portion of long term debt |  |  | — |  |  | — |  |  | —
﻿Current liabilities - discontinued operations |  |  | 15,191 |  |  | — |  |  | 15,191
﻿Total current liabilities |  |  | 47,343 |  |  | — |  |  | 47,343
﻿Asset retirement obligations |  |  | 14,459 |  |  | — |  |  | 14,459
﻿Other long-term liabilities |  |  | 1,264 |  |  | — |  |  | 1,264
﻿Long term debt, excluding current portion, net |  |  | — |  |  | — |  |  | —
﻿Total liabilities |  |  | 63,066 |  |  | — |  |  | 63,066
﻿Commitments and contingencies |  |  |  |  |  |  |  |  |
﻿Shareholders’ equity: |  |  |  |  |  |  |  |  |
﻿Preferred stock, none issued, 500,000 shares authorized, $25 par value |  |  | — |  |  | — |  |  | —
﻿Common stock, $0.10 par value; 100,000,000 shares authorized, 67,092,825 shares issued and 59,538,878 shares outstanding |  |  | 6,709 |  |  | — |  |  | 6,709
﻿Additional paid-in capital |  |  | 72,229 |  |  | — |  |  | 72,229
﻿Less treasury stock, 7,553,947 shares at cost |  |  | (37,798) |  |  | — |  |  | (37,798)
﻿Retained earnings |  |  | 58,155 |  |  | — |  |  | 58,155
﻿Total shareholders' equity |  |  | 99,295 |  |  | — |  |  | 99,295
﻿Total liabilities and shareholders' equity |  | $ | 162,361 |  | $ | — |  | $ | 162,361
﻿

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