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Note 13 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Income Taxes. |
Schedule of income tax expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
(In thousands) |  | 2022 |  | 2021 |  | 2020
Current taxes: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Federal | ​ | $ | 517 | ​ | $ | — | ​ | $ | —
State | ​ |  | 407 | ​ |  | 3 | ​ |  | 19
Current taxes | ​ |  | 924 | ​ |  | 3 | ​ |  | 19
Deferred taxes: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Federal | ​ |  | 28,389 | ​ |  | 6,518 | ​ |  | (3,164)
State | ​ |  | 840 | ​ |  | (1,874) | ​ |  | (339)
Deferred taxes | ​ |  | 29,229 | ​ |  | 4,644 | ​ |  | (3,503)
Provision for income tax expense (benefit), net | ​ | $ | 30,153 | ​ | $ | 4,647 | ​ | $ | (3,484)
​
Schedule of accounting for differences between income taxes computed at the federal statutory rate and the provision recorded for income taxes | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
(In thousands) |  | 2022 |  | 2021 |  | 2020
Income taxes computed at the federal statutory rate | ​ | $ | 30,701 | ​ | $ | 9,325 | ​ | $ | (1,762)
Effect of: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
State taxes, net of federal benefits | ​ |  | 1,422 | ​ |  | 796 | ​ |  | (253)
State tax rate changes, net of federal benefits | ​ | ​ | (546) | ​ | ​ | (2,274) | ​ | ​ | —
Percentage depletion | ​ |  | (3,314) | ​ |  | (3,363) | ​ |  | (714)
PPP Loan forgiveness | ​ |  | — | ​ |  | — | ​ |  | (1,773)
Stock-based compensation | ​ |  | (1,499) | ​ |  | (194) | ​ |  | 473
162(m) compensation limitation | ​ | ​ | 3,481 | ​ | ​ | — | ​ | ​ | —
Other, net | ​ |  | (92) | ​ |  | 357 | ​ |  | 545
Total | ​ | $ | 30,153 | ​ | $ | 4,647 | ​ | $ | (3,484)
​
Schedule of deferred tax assets and liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(In thousands) |  | 2022 |  | 2021
Deferred tax assets: |  | ​ |  |  | ​ |
Loss carryforwards U.S. - Federal/States | ​ | $ | 6,598 | ​ | $ | 15,975
Asset retirement obligations | ​ |  | 6,359 | ​ |  | 5,175
Accrued expenses | ​ |  | 3,257 | ​ |  | 744
Stock-based compensation | ​ |  | 2,249 | ​ |  | 2,331
Total deferred tax assets | ​ |  | 18,463 | ​ |  | 24,225
​ | ​ | ​ | ​ | ​ | ​ | ​
Deferred tax liabilities: | ​ | ​ | ​ | ​ | ​ | ​
Depreciation & amortization | ​ |  | (54,100) | ​ |  | (30,631)
Net deferred tax liabilities | ​ | $ | (35,637) | ​ | $ | (6,406)
​

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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