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Retirement Plans (Information About Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Policies and Strategies Narrative Description | Plan assets consist primarily of various fixed income and equity investments. The Company's primary investment objective is to provide long-term growth of capital while accepting a moderate level of risk. The investments are limited to cash and equivalents, bonds, preferred stocks and common stocks. The investment target ranges and actual allocation of pension plan assets by major category at December 31, 2013 and 2012 are as follows |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00% |
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques | In accordance with the fair value disclosure requirements with FASB ASC 820, "Fair Value Measurements and Disclosures," the following assets were measured at fair value on a recurring basis at December 31, 2013 and 2012. Additional information regarding FASB ASC 820 and the fair value hierarchy can be found in Note 19, Fair Value Measurements |  |
Fair value of plan assets | $ 15,039 | $ 13,262 | $ 12,088
United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6,769 | 6,051 | 5,160
Cash and Cash Equivalents [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Cash and cash equivalents |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 10.00% |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 4.00% | 7.00% |
Fair value of plan assets | 568 | 984 |
Cash and Cash Equivalents [Member] | United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Cash |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 100.00% |  |
Fair value of plan assets | 369 | 520 |
Fixed Income Funds [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Total fixed income funds |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 25.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 50.00% |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 27.00% | 31.00% |
Fair value of plan assets | 4,005 | 4,168 |
Municipal Bonds [Member] | United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | U.K. Government securities |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 50.00% |  |
Fair value of plan assets | 1,468 | 1,529 |
Corporate Bond Securities [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,005 | 4,168 |
Equity Funds [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Total mutual funds / equities |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 50.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 70.00% |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 69.00% | 62.00% |
Fair value of plan assets | 10,466 | 8,110 |
Equity Funds [Member] | United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Equity securities |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 100.00% |  |
Fair value of plan assets | 2,803 | 2,250 |
Mutual Funds [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 9,142 | 7,163 |
Asset Allocations, Common Stock [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,324 | 947 |
Commercial Property [Member] | United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Investment Strategies, Investment Fund Category | Commercial property |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 50.00% |  |
Fair value of plan assets | 2,129 | 1,636 |
Alternatives [Member] | United Kingdom Benefit Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 116 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + 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) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: 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=29635418&loc=d3e12355-114930 + Details
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- Definition A narrative description of investment policies and strategies, including target allocation percentages or range of percentages considering the major categories of plan assets as of the latest statement of financial position presented (on a weighted-average basis for employers with more than one plan), and other factors that are pertinent to an understanding of those policies and strategies such as investment goals, risk management practices, allowable and prohibited investment types including the use of derivatives, diversification, and the relationship between plan assets and benefit obligations. For investment funds disclosed as major categories, the narrative description would be expected to also include a description of the significant investment strategies of those funds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition A description of the investment strategies for any investment fund investments by the Plan which are considered and disclosed as a major investment category by 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 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition This element represents the information provided by management related to the valuation techniques used to develop the fair value measurements of plan assets as of the date of the 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 (d) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + 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 (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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