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Retirement Plans (Narrative) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) contract | Jun. 30, 2014 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of retirement plans |  |  | 7 |
Defined Benefit Plan Number |  |  | 3 |
Active Defined Benefit Plan Number |  |  | 1 |
Inactive Defined Benefit Plan Number |  |  | 2 |
Defined Contribution Plan Number |  |  | 4 |
Description of Postemployment Benefits |  |  | The Company sponsors seven defined contribution plans for hourly and salaried employees across our domestic and international facilities. The following table summarizes the expense associated with the contributions made to these plans. |
Defined Contribution Plan, Cost Recognized | $ | $ 917 | $ 631 | $ 1,741 | $ 1,306
Canadian Employees [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Contribution Plan Number |  |  | 2 |
United Kingdom Benefit Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year | $ |  |  | $ 283 |
Defined Benefit Plan, Contributions by Employer | $ |  |  | 146 |
Defined Contribution Plan, Cost Recognized | $ | $ 115 | $ 30 | 198 | $ 68
United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year | $ |  |  | $ 0 |

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- Definition Number of defined benefit plans offered by the company. + References No definition available. + Details
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- Definition Number of defined contribution plans offered by the company. + References No definition available. + Details
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- Definition Number of inactive defined benefit plans offered by the company. + References No definition available. + Details
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- Definition Number of retirement plans offered by the company. + References No definition available. + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + 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 (b)(3) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
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- Definition Description of benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement, except for: a) benefits provided through a pension or postretirement benefit plan, b) individual deferred compensation arrangements, c) termination benefits pertaining to exit or disposal activities, and d) stock compensation plans. Benefits may be provided in cash or in kind and may be paid as a result of disability, layoff, death, or other event. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 15 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6410066&loc=d3e79194-111664 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Nonretirement Postemployment Benefits -URI http://asc.fasb.org/extlink&oid=6518940 + Details
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