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Defined Benefit Plans - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) plan | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Domestic |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated unrecognized loss that will be amortized from AOCI, net of income taxes | $ 200 |  |
Number of plans | plan | 2 |  |
Benefit obligation | $ 7,000 | $ 7,000 |
Fair value of plan assets | $ 5,000 | $ 4,900 |
Annual rate of return on plan assets | 7.00% | 7.00% |
Estimated future benefit payments | $ 400 |  |
Maximum | Domestic |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 4.00% | 4.00% |
Minimum | Domestic |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 3.80% | 3.80% |
United Kingdom Subsidiary | UK Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Underfunded status of UK Plan | $ 49,495 | $ 32,270 |
Annual rate of inflation | 2.20% | 2.00% |
Average life expectancy | 27 years |  |
Estimated unrecognized loss that will be amortized from AOCI, net of income taxes | $ 2,200 |  |
Future estimated employer contributions to be paid next year | 4,400 |  |
Benefit obligation | 306,731 | $ 295,825 | $ 332,806
Fair value of plan assets | $ 257,236 | $ 263,555 | $ 282,095
Discount rate | 2.70% | 3.80% |
Annual rate of return on plan assets | 6.20% | 6.30% | 6.70%
Selling, General and Administrative Expenses | Domestic |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Reclassification adjustment from AOCI, net of income taxes | $ 200 | $ 200 | $ 200
Selling, General and Administrative Expenses | United Kingdom Subsidiary | UK Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Reclassification adjustment from AOCI, net of income taxes | 1,700 | 2,000 | $ 1,600
Other Noncurrent Liabilities | United Kingdom Subsidiary | UK Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Underfunded status of UK Plan | $ 49,495 | $ 32,270 |

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- Definition Defined Benefit Plan, Annual Inflation Rate + References No definition available. + Details
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- Definition Defined Benefit Plan, Average Life Expectancy + References No definition available. + Details
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- Definition Defined Benefit Plan, Expected Future Benefit Payments, Next Ten Fiscal Years + References No definition available. + Details
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- Definition Defined Benefit Plan, Number of Plans + References No definition available. + Details
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- Definition Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation). + References No definition available. + Details
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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512046 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition 1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Projected Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6522206 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Postretirement Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503904 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
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- Definition The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Amount after tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit) for pension and other postretirement defined benefit plans. + References No definition available. + Details
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