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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Income Tax Disclosure [Abstract] |
Schedule of components of income tax provision (benefit) | Components of income tax provision (benefit) reflected in the consolidated statements of operations consist of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ | ​ | 2022 |  | 2021 |  | 2020
Current tax provision (benefit): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ | $ | — | ​ | $ | (1,103) | ​ | $ | (18,927)
Foreign | ​ |  | 8,217 | ​ |  | 7,347 | ​ |  | 4,109
Total current | ​ | $ | 8,217 | ​ | $ | 6,244 | ​ | $ | (14,818)
Deferred tax provision (benefit): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ | $ | 1,167 | ​ | $ | (5,756) | ​ | $ | 3,853
Foreign | ​ |  | 3,219 | ​ |  | (9,446) | ​ |  | (7,736)
Total deferred | ​ | $ | 4,386 | ​ | $ | (15,202) | ​ | $ | (3,883)
Total income tax provision (benefit) | ​ | $ | 12,603 | ​ | $ | (8,958) | ​ | $ | (18,701)
​
Schedule of components of income (loss) before income taxes | Components of income (loss) before income taxes are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ | ​ | 2022 |  | 2021 |  | 2020
Domestic | ​ | $ | (13,745) | ​ | $ | (53,989) | ​ | $ | (3,406)
Foreign | ​ |  | (61,436) | ​ |  | (16,653) | ​ |  | 4,789
Income (loss) before income taxes | ​ | $ | (75,181) | ​ | $ | (70,642) | ​ | $ | 1,383
​
Schedule of differences between income tax provision (benefit) at U.S. statutory rate and actual income tax provision (benefit) | The primary differences between the income tax provision (benefit) at the U.S. statutory rate and our actual income tax provision (benefit) are as follows (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ | ​ | 2022 |  | 2021 |  | 2020 |
Taxes at U.S. statutory rate | ​ | $ | (15,788) |  | 21.0 | % | $ | (14,835) |  | 21.0 | % | $ | 290 |  | 21.0 | %
Foreign tax provision (benefit) | ​ |  | 18,011 |  | (24.0) | ​ |  | 10,326 |  | (14.6) | ​ |  | (4,517) |  | (326.7) | ​
CARES Act | ​ |  | — |  | — | ​ |  | — |  | — | ​ |  | (7,596) |  | (549.2) | ​
Subsidiary restructuring | ​ |  | — |  | — | ​ |  | — |  | — | ​ |  | (8,333) |  | (602.5) | ​
Change in valuation allowance | ​ | ​ | 8,110 | ​ | (10.8) | ​ | ​ | (5,675) | ​ | 8.0 | ​ | ​ | 1,091 | ​ | 78.9 | ​
Non-deductible expenses | ​ | ​ | 2,366 | ​ | (3.1) | ​ | ​ | 1,487 | ​ | (2.1) | ​ | ​ | 1,184 | ​ | 85.6 | ​
Other | ​ |  | (96) |  | 0.1 | ​ |  | (261) |  | 0.4 | ​ |  | (820) |  | (59.3) | ​
Income tax provision (benefit) | ​ | $ | 12,603 |  | (16.8) | % | $ | (8,958) |  | 12.7 | % | $ | (18,701) |  | (1,352.2) | %
​
Schedule of deferred income taxes | Deferred income taxes result from the effect of transactions that are recognized in different periods for financial and tax reporting purposes. The nature of these differences and the income tax effect of each are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31,
​ | ​ | 2022 |  | 2021
Deferred tax liabilities: | ​ |  | ​ | ​ |  | ​
Depreciation | ​ | $ | 147,302 | ​ | $ | 137,898
Prepaid and other | ​ | ​ | 1,868 | ​ | ​ | 1,088
Total deferred tax liabilities | ​ | $ | 149,170 | ​ | $ | 138,986
Deferred tax assets: | ​ |  |  | ​ |  |
Net operating losses | ​ | $ | (53,136) | ​ | $ | (56,369)
Reserves, accrued liabilities and other | ​ |  | (19,308) | ​ |  | (9,698)
Total deferred tax assets | ​ |  | (72,444) | ​ |  | (66,067)
Valuation allowance | ​ |  | 22,157 | ​ |  | 14,047
Net deferred tax liabilities | ​ | $ | 98,883 | ​ | $ | 86,966
​

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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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