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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The Company's income (loss) before income taxes and income tax expense (benefit) from continuing operations, each by tax jurisdiction, consists of the following (dollars in thousands):
|  | Year ended December 31,
|  | 2017 |  | 2016 |  | 2015
Income (loss) before income taxes: |  |  |  |  |  |
Domestic |  | $ | 50,760 |  |  | $ | (69,850 | ) |  | $ | (3,150 | )
Foreign |  | 15,450 |  |  | 11,620 |  |  | (18,970 | )
Total income (loss) before income taxes |  | $ | 66,210 |  |  | $ | (58,230 | ) |  | $ | (22,120 | )
Current income tax expense: |  |  |  |  |  |
Federal |  | $ | 12,800 |  |  | $ | 7,560 |  |  | $ | 12,150 |
State and local |  | 1,770 |  |  | 1,920 |  |  | 1,080 |
Foreign |  | 5,420 |  |  | 4,250 |  |  | 2,060 |
Total current income tax expense |  | 19,990 |  |  | 13,730 |  |  | 15,290 |
Deferred income tax expense (benefit): |  |  |  |  |  |
Federal |  | 15,180 |  |  | (28,180 | ) |  | (1,980 | )
State and local |  | 1,280 |  |  | (2,550 | ) |  | (1,530 | )
Foreign |  | (1,200 | ) |  | (1,430 | ) |  | (5,240 | )
Total deferred income tax expense |  | 15,260 |  |  | (32,160 | ) |  | (8,750 | )
Income tax expense (benefit) |  | $ | 35,250 |  |  | $ | (18,430 | ) |  | $ | 6,540 |
Schedule of Deferred Tax Assets and Liabilities | The components of deferred taxes are as follows (dollars in thousands):
|  | December 31, 2017 |  | December 31, 2016
Deferred tax assets: |  |  |  |
Accounts receivable |  | $ | 1,000 |  |  | $ | 780 |
Inventories |  | 5,230 |  |  | 6,410 |
Goodwill and other intangible assets |  | — |  |  | 3,120 |
Accrued liabilities and other long-term liabilities |  | 20,350 |  |  | 26,110 |
Tax loss and credit carryforwards |  | 7,290 |  |  | 6,680 |
Gross deferred tax asset |  | 33,870 |  |  | 43,100 |
Valuation allowances |  | (6,400 | ) |  | (5,670 | )
Net deferred tax asset |  | 27,470 |  |  | 37,430 |
Deferred tax liabilities: |  |  |  |
Property and equipment |  | (16,380 | ) |  | (14,580 | )
Goodwill and other intangible assets |  | (5,350 | ) |  | — |
Investment in foreign affiliates, including withholding tax |  | (740 | ) |  | (1,140 | )
Other, principally deferred income |  | (1,550 | ) |  | (1,330 | )
Gross deferred tax liability |  | (24,020 | ) |  | (17,050 | )
Net deferred tax asset |  | $ | 3,450 |  |  | $ | 20,380 |
Schedule of Effective Income Tax Rate Reconciliation | The following is a reconciliation of income tax expense (benefit) computed at the U.S. federal statutory rate to income tax expense (benefit) allocated to income (loss) from continuing operations before income taxes (dollars in thousands):
|  | Year ended December 31,
|  | 2017 |  | 2016 |  | 2015
U.S. federal statutory rate |  | 35 | % |  | 35 | % |  | 35 | %
Tax at U.S. federal statutory rate |  | $ | 23,170 |  |  | $ | (20,380 | ) |  | $ | (7,740 | )
State and local taxes, net of federal tax benefit |  | 2,250 |  |  | (550 | ) |  | (520 | )
Differences in statutory foreign tax rates |  | (2,580 | ) |  | (1,930 | ) |  | 110 |
Change in recognized tax benefits |  | (480 | ) |  | (1,410 | ) |  | (460 | )
Goodwill and other intangible assets impairment |  | — |  |  | 5,050 |  |  | 11,430 |
Nontaxable income |  | (1,050 | ) |  | (310 | ) |  | (980 | )
Research and manufacturing incentives |  | (1,510 | ) |  | (830 | ) |  | (1,680 | )
Tax on undistributed foreign earnings |  | (430 | ) |  | 340 |  |  | 610 |
Net change in valuation allowance |  | 520 |  |  | 2,140 |  |  | 3,770 |
Tax Reform Act |  | 12,660 |  |  | — |  |  | — |
Other, net |  | 2,700 |  |  | (550 | ) |  | 2,000 |
Income tax expense (benefit) |  | $ | 35,250 |  |  | $ | (18,430 | ) |  | $ | 6,540 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the change in the UTBs and related accrued interest and penalties for the years ended December 31, 2017 and 2016 is as follows (dollars in thousands):
|  | Unrecognized Tax Benefits
Balance at December 31, 2015 |  | $ | 4,610 |
Tax positions related to current year: |  |
Additions |  | 120 |
Tax positions related to prior years: |  |
Additions |  | 80 |
Reductions |  | (10 | )
Settlements |  | — |
Lapses in the statutes of limitations |  | (1,230 | )
Balance at December 31, 2016 |  | $ | 3,570 |
Tax positions related to current year: |  |
Additions |  | 250 |
Tax positions related to prior years: |  |  |
Additions |  | 860 |
Reductions |  | (100 | )
Settlements |  | — |
Lapses in the statutes of limitations |  | (1,210 | )
Balance at December 31, 2017 |  | $ | 3,370 |

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