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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
Components of Income (Loss) Before Taxes from Continuing Operations | The components of income (loss) before taxes from continuing operations consisted of the following for the years ended December 31 (in thousands):
| 2017 |  | 2016 |  | 2015
Domestic | $ | 78,468 |  |  | $ | 37,316 |  |  | $ | 40,176 |
Foreign | (560 | ) |  | 12,667 |  |  | (3,076 | )
Income before taxes from continuing operations | $ | 77,908 |  |  | $ | 49,983 |  |  | $ | 37,100 |
Summary of Provision for Income Taxes for Continuing Operations | The provision for (benefit of) income taxes from continuing operations for the years ended December 31 consisted of the following (in thousands):
| 2017 |  | 2016 |  | 2015
Current: |  |  |  |  |
U.S. Federal | $ | 16,882 |  |  | $ | 14,703 |  |  | $ | 12,294 |
State | 2,479 |  |  | 2,987 |  |  | 2,010 |
Foreign | 2,687 |  |  | 3,467 |  |  | 1,371 |
Total current | 22,048 |  |  | 21,157 |  |  | 15,675 |
Deferred: |  |  |  |  |
U.S. Federal | (7,466 | ) |  | (5,404 | ) |  | (178 | )
State | 1,246 |  |  | 1,595 |  |  | 273 |
Foreign | (885 | ) |  | (1,084 | ) |  | (2,146 | )
Total deferred | (7,105 | ) |  | (4,893 | ) |  | (2,051 | )
Provision for income taxes | $ | 14,943 |  |  | $ | 16,264 |  |  | $ | 13,624 |
(Benefit of) Provision for Income Taxes from Discontinued Operations | The benefit of income taxes from discontinued operations for the years ended December 31 consisted of the following (in thousands):
| 2017 |  | 2016 |  | 2015
Current: |  |  |  |  |
U.S. Federal | $ | 219 |  |  | $ | 24 |  |  | $ | 15 |
State | 20 |  |  | 2 |  |  | 1 |
Foreign | — |  |  | — |  |  | — |
Benefit of income taxes | $ | 239 |  |  | $ | 26 |  |  | $ | 16 |
Provision for Income Taxes from Continuing Operations Differs from the Federal Statutory Rate | The provision for income taxes from continuing operations differs from the federal statutory rate of 35% for the years ended December 31 due to the following (in thousands):
| 2017 |  | 2016 |  | 2015
Statutory rate | $ | 27,268 |  |  | 35.0 | % |  | $ | 17,494 |  |  | 35.0 | % |  | $ | 12,985 |  |  | 35.0 | %
State taxes, less federal effect | 2,442 |  |  | 3.1 | % |  | 3,033 |  |  | 6.1 | % |  | 1,845 |  |  | 5.0 | %
Tax effect of Tax Reform Act | (12,535 | ) |  | (16.1 | )% |  | — |  |  | — | % |  | — |  |  | — | %
Domestic manufacturer's deduction | (1,578 | ) |  | (2.0 | )% |  | (1,363 | ) |  | (2.7 | )% |  | (795 | ) |  | (2.1 | )%
Excess tax benefit on stock based compensation | (1,415 | ) |  | (1.8 | )% |  | — |  |  | — | % |  | — |  |  | — | %
Federal tax credits | (373 | ) |  | (0.5 | )% |  | (439 | ) |  | (0.9 | )% |  | (242 | ) |  | (0.7 | )%
Uncertain tax positions | (148 | ) |  | (0.2 | )% |  | (154 | ) |  | (0.3 | )% |  | (344 | ) |  | (0.9 | )%
Change in valuation allowance | 660 |  |  | 0.8 | % |  | 685 |  |  | 1.4 | % |  | 284 |  |  | 0.7 | %
Non-deductible expenses | 499 |  |  | 0.7 | % |  | 556 |  |  | 1.1 | % |  | 2 |  |  | — | %
Foreign rate differential | 2 |  |  | — | % |  | (677 | ) |  | (1.4 | )% |  | (6 | ) |  | — | %
Intangible asset impairment | — |  |  | — | % |  | 341 |  |  | 0.7 | % |  | — |  |  | — | %
Worthless stock deduction | — |  |  | — | % |  | (868 | ) |  | (1.7 | )% |  | — |  |  | — | %
Intercompany debt discharge | — |  |  | — | % |  | (2,389 | ) |  | (4.8 | )% |  | — |  |  | — | %
Other | 121 |  |  | 0.2 | % |  | 45 |  |  | — | % |  | (105 | ) |  | (0.3 | )%
| $ | 14,943 |  |  | 19.2 | % |  | $ | 16,264 |  |  | 32.5 | % |  | $ | 13,624 |  |  | 36.7 | %
Deferred Tax Liabilities (Assets) | Deferred tax liabilities (assets) at December 31 consist of the following (in thousands):
| 2017 |  | 2016
Depreciation | $ | 9,563 |  |  | $ | 17,367 |
Goodwill | 32,662 |  |  | 43,562 |
Intangible assets | 10,928 |  |  | 14,731 |
Foreign withholding tax | 1,014 |  |  | — |
Other | 652 |  |  | 892 |
Gross deferred tax liabilities | 54,819 |  |  | 76,552 |
Equity compensation | (12,577 | ) |  | (21,439 | )
Other | (13,247 | ) |  | (18,473 | )
Gross deferred tax assets | (25,824 | ) |  | (39,912 | )
Valuation allowances | 2,242 |  |  | 1,362 |
Deferred tax assets, net of valuation allowances | (23,582 | ) |  | (38,550 | )
Net deferred tax liabilities | $ | 31,237 |  |  | $ | 38,002 |
Summary of Valuation Allowance | The following sets forth a reconciliation of the beginning and ending amount of the Company’s valuation allowance (in thousands):
| 2017 |  | 2016 |  | 2015
Balance as of January 1 | $ | 1,362 |  |  | $ | 766 |  |  | $ | 400 |
Cost charged to the tax provision | 1,505 |  |  | 983 |  |  | 286 |
Reductions | (820 | ) |  | (338 | ) |  | (78 | )
Currency translation | 195 |  |  | (49 | ) |  | — |
Balance as of December 31 | $ | 2,242 |  |  | $ | 1,362 |  |  | $ | 766 |
Income Taxes Paid, Net of Tax Refunds | The Company made net payments for income taxes for the following amounts for the years ended December 31 (in thousands):
| 2017 |  | 2016 |  | 2015
Payments made for income taxes, net | $ | 26,186 |  |  | $ | 17,700 |  |  | $ | 11,879 |
Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
| 2017 |  | 2016 |  | 2015
Balance as of January 1 | $ | 3,466 |  |  | $ | 3,876 |  |  | $ | 1,414 |
Additions for tax positions of the current year | 99 |  |  | 33 |  |  | 148 |
Additions for tax positions of prior years | — |  |  | — |  |  | 2,955 |
Reductions for tax positions of prior years for: |  |  |  |  |
Settlements and changes in judgment | (422 | ) |  | (256 | ) |  | (331 | )
Lapses of applicable statute of limitations | — |  |  | — |  |  | (310 | )
Divestitures and foreign currency translation | 393 |  |  | (187 | ) |  | — |
Balance as of December 31 | $ | 3,536 |  |  | $ | 3,466 |  |  | $ | 3,876 |
Interest (Net of Federal Tax Benefit) and Penalties Recognized | Interest (net of federal tax benefit) and penalties recognized during the years ended December 31 were (in thousands):
| 2017 |  | 2016 |  | 2015
Interest and penalties recognized as income | $ | 130 |  |  | $ | 122 |  |  | $ | 87 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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