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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Loss from Continuing Operations Before Benefit for Income Taxes | The following table summarizes the loss from continuing operations before benefit (provision) for income taxes and share of net income (loss) from joint venture.
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
United States |  | $ | (146,963) |  |  | $ | (31,760) |  |  | $ | (200,164) |
Foreign |  | (5,125) |  |  | (365) |  |  | (8,214) |
Loss from continuing operations before benefit (provision) for income taxes and share of net income (loss) from joint venture |  | $ | (152,088) |  |  | $ | (32,125) |  |  | $ | (208,378) |
Income Tax Expense (Benefit) | The following table summarizes total income tax expense (benefit) recognized in each year.
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Current taxes: |  |  |  |  |  |
U.S. Federal |  | $ | (299) |  |  | $ | (5,948) |  |  | $ | 5,684 |
State |  | 4,599 |  |  | 1,656 |  |  | 58 |
Foreign |  | 2,250 |  |  | 2,247 |  |  | 2,271 |
Total current tax expense (benefit) |  | 6,550 |  |  | (2,045) |  |  | 8,013 |
Deferred taxes: |  |  |  |  |  |
U.S. Federal |  | $ | (10,368) |  |  | $ | (1,430) |  |  | $ | (6,028) |
State |  | (5,368) |  |  | 3,850 |  |  | (214) |
U.S. federal and foreign valuation allowance |  | 2,066 |  |  | (592) |  |  | 2,263 |
Foreign |  | (1,852) |  |  | 522 |  |  | (5,582) |
Total deferred tax expense (benefit) |  | (15,522) |  |  | 2,350 |  |  | (9,561) |
Total income tax expense (benefit) |  | $ | (8,972) |  |  | $ | 305 |  |  | $ | (1,548) |
Reconciliation of Income Taxes Based on U.S. Federal Statutory Rate | The following table presents a reconciliation of income taxes based on the U.S. federal statutory income tax rate.
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
U.S federal statutory income tax rate |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Change in valuation allowance, exclusive of state |  | (1.3) | % |  | 1.8 | % |  | (1.1) | %
State taxes, net of federal taxes, exclusive of tax reform |  | 0.2 | % |  | (13.6) | % |  | 0.1 | %
Non-U.S. earnings taxed at different rates |  | 1.4 | % |  | 3.0 | % |  | 0.3 | %
GILTI |  | (0.1) | % |  | — | % |  | — | %
Goodwill impairment |  | (12.7) | % |  | — | % |  | (17.7) | %
Nondeductible asset loss |  | — | % |  | (2.2) | % |  | (0.2) | %
Research and development tax credit |  | 0.4 | % |  | 2.2 | % |  | 0.3 | %
Change in uncertain tax positions |  | 2.2 | % |  | 4.3 | % |  | 0.5 | %
Impact of tax reform: |  |  |  |  |  |
Toll charge, net of foreign tax credit |  | — | % |  | — | % |  | 0.7 | %
Remeasurement of deferred taxes pursuant to tax reform |  | — | % |  | — | % |  | (1.2) | %
Impact of 2019 Treasury regulations |  | — | % |  | (18.4) | % |  | — | %
CARES Act |  | 2.7 | % |  | — | % |  | — | %
Divestiture of business segment, exclusive of tax reform |  | — | % |  | — | % |  | (1.1) | %
Return to provision |  | (0.5) | % |  | (0.2) | % |  | (1.0) | %
Taxes on unremitted foreign earnings |  | (3.9) | % |  | (2.2) | % |  | — | %
Restructuring gain |  | (2.6) | % |  | — | % |  | — | %
Other adjustments, net |  | (0.9) | % |  | 3.3 | % |  | 0.1 | %
Effective tax rate |  | 5.9 | % |  | (1.0) | % |  | 0.7 | %
Principal Components of Deferred Tax Assets and Liabilities | The following table summarizes the principal components of the deferred tax assets and liabilities.
|  | As of December 31,
|  | 2020 |  | 2019
Deferred income tax liabilities: |  |  |  |
Tax in excess of book depreciation |  | $ | 27,459 |  |  | $ | 28,329 |
Intangible assets |  | 23,695 |  |  | 26,474 |
Operating leases |  | 11,149 |  |  | 12,697 |
Taxes on unremitted foreign earnings |  | 6,601 |  |  | — |
Other deferred tax liabilities |  | 533 |  |  | 2,178 |
Total deferred income tax liabilities |  | 69,437 |  |  | 69,678 |
Deferred income tax assets: |  |  |  |
Interest expense limitation |  | 3,811 |  |  | 14,073 |
Goodwill |  | 25,653 |  |  | 386 |
Inventories |  | 3,224 |  |  | 2,447 |
Interest rate swap |  | 3,611 |  |  | 2,838 |
Pension/Personnel accruals |  | 2,909 |  |  | 1,669 |
Operating leases |  | 13,209 |  |  | 14,438 |
Net operating loss carryforwards |  | 18,659 |  |  | 15,486 |
R&D credit carryforwards |  | — |  |  | 2,463 |
Non-U.S. credit carryforwards |  | 3,574 |  |  | 3,419 |
Accruals and reserves |  | 2,399 |  |  | 2,335 |
Other deferred tax assets |  | 2,891 |  |  | 1,157 |
Deferred income tax assets before valuation allowance |  | 79,940 |  |  | 60,711 |
Valuation allowance on deferred tax assets |  | (21,681) |  |  | (15,494) |
Total deferred income tax assets |  | 58,259 |  |  | 45,217 |
Net deferred income tax liabilities |  | $ | 11,178 |  |  | $ | 24,461 |
Summary of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits, Excluding Interest and Penalties | The following table presents a reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest and penalties.
|  | Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
Balance at beginning of year |  | $ | 2,589 |  |  | $ | 4,609 |  |  | $ | 5,655 |
Additions for tax positions of prior years |  | 121 |  |  | — |  |  | 304 |
Settlements for tax positions of prior years |  | — |  |  | (275) |  |  | — |
Reductions for tax positions of prior years |  | (2,463) |  |  | (1,745) |  |  | (1,350) |
Balance at end of year |  | $ | 247 |  |  | $ | 2,589 |  |  | $ | 4,609 |

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