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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Components of Income Tax Expense |
| Years ended December 31,
| 2021 |  | 2020 |  | 2019
| (in thousands)
Income (loss) before taxes: |  |  |  |  |
United States operations | $ | 60,806 |  |  | $ | (117,819) |  |  | $ | 42,833 |
Foreign operations | 26,856 |  |  | 183,946 |  |  | 109,577 |
Income before taxes | $ | 87,662 |  |  | $ | 66,127 |  |  | $ | 152,410 |
Income tax expense (benefit): |  |  |  |  |
Currently payable |  |  |  |  |
United States federal | $ | 4,375 |  |  | $ | 273 |  |  | $ | 21,893 |
United States state and local | 3,108 |  |  | 91 |  |  | 3,090 |
Foreign | 13,634 |  |  | 11,511 |  |  | 13,859 |
| 21,117 |  |  | 11,875 |  |  | 38,842 |
Deferred |  |  |  |  |
United States federal | 13,204 |  |  | (1,754) |  |  | 7,567 |
United States state and local | 5,205 |  |  | (2,310) |  |  | (1,205) |
Foreign | (14,321) |  |  | 3,913 |  |  | (2,685) |
| 4,088 |  |  | (151) |  |  | 3,677 |
Income tax expense | $ | 25,205 |  |  | $ | 11,724 |  |  | $ | 42,519 |
Effective Income Tax Rate Reconciliation from Continuing Operations |
| Years Ended December 31,
| 2021 |  | 2020 |  | 2019
Effective income tax rate reconciliation from continuing operations: |  |  |  |  |
United States federal statutory rate | 21.0% |  | 21.0% |  | 21.0%
State and local income taxes | 8.5% |  | (2.6)% |  | 1.2%
Impact of change in tax contingencies | (1.3)% |  | 2.3% |  | —%
Foreign income tax rate differences | 1.9% |  | (38.2)% |  | (8.6)%
Impact of change in deferred tax asset valuation allowance | (49.4)% |  | 2.3% |  | 9.5%
Domestic permanent differences and tax credits | 45.6% |  | 33.3% |  | 4.7%
Impact of share-based compensation | 2.5% |  | 1.4% |  | 0.1%
Impact of CARES act | —% |  | (1.8)% |  | —%
| 28.8% |  | 17.7% |  | 27.9%
Components of Deferred Income Tax Balances | The components of deferred income were as follows:
| December 31,
| 2021 |  | 2020
| (In thousands)
Components of deferred income tax balances: |  |  |
Deferred income tax liabilities: |  |  |
Plant, equipment, and intangibles | $ | (105,986) |  |  | $ | (92,271) |
Right of use asset | (19,139) |  |  | (17,610) |
| (125,125) |  |  | (109,881) |
Deferred income tax assets: |  |  |
Postretirement, pensions, and stock compensation | 32,139 |  |  | 35,394 |
Reserves and accruals | 19,617 |  |  | 24,388 |
Net operating loss, capital loss, and tax credit carryforwards | 94,537 |  |  | 107,028 |
Lease liability | 19,881 |  |  | 18,515 |
Valuation allowances | (68,719) |  |  | (84,308) |
| 97,455 |  |  | 101,017 |
Net deferred income tax liability | $ | (27,670) |  |  | $ | (8,864) |
Summary of Net Operating Loss Carryforwards | The following tables summarize our net operating losses carryforwards and tax credit carryforwards as of December 31, 2021 by jurisdiction:
| Net Operating Loss Carryforwards
| (In thousands)
Australia | $ | 10,134 |
Belgium | 5,069 |
Germany | 14,718 |
Netherlands | 3,975 |
Other | 16,547 |
United Kingdom | 11,737 |
United States - Federal and various states | 101,670 |
Total | $ | 163,850 |
Summary of Tax Credit Carryforwards |
| Tax Credit Carryforwards
| (In thousands)
Belgium | $ | 1,088 |
Canada | 663 |
United States | 15,416 |
Total | $ | 17,167 |
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:
| 2021 |  | 2020
| (In thousands)
Balance at beginning of year | $ | 8,573 |  |  | $ | 6,779 |
Additions based on tax positions related to the current year | 422 |  |  | 548 |
Additions for tax positions of prior years | 168 |  |  | 1,574 |
Reductions for tax positions of prior years - Settlement | (3,264) |  |  | (328) |
Reduction for tax positions of prior years - Statute of limitations | (78) |  |  | — |
Balance at end of year | $ | 5,821 |  |  | $ | 8,573 |

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