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Retirement Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2012
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |
Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans | Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2012 are as follows:
Asset Category | Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents | $ | 701 |  |  | $ | 701 |  |  | $ | — |  |  | $ | — |
Equity Securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Small-Cap (1) | 1,438 |  |  | 1,438 |  |  | — |  |  | — |
U.S. Mid-Cap (1) | 2,266 |  |  | 2,266 |  |  | — |  |  | — |
International Small-Cap (2) | 63 |  |  | 63 |  |  | — |  |  | — |
Mutual Funds: |  |  |  |  |  |  |  |  |  |  |
Corporate Bonds | 18,671 |  |  | 18,671 |  |  | — |  |  | — |
U.S. Large-Cap (3) | 18,141 |  |  | 18,141 |  |  | — |  |  | — |
International Large-Cap (4) | 5,662 |  |  | 5,662 |  |  | — |  |  | — |
Investment Account held by Pension Plan (5) | 8,855 |  |  | — |  |  | 8,855 |  |  | — |
Total | $ | 55,797 |  |  | $ | 46,942 |  |  | $ | 8,855 |  |  | $ | — |
(1) | This category is comprised of actively managed domestic common stocks.
(2) | This category is comprised of actively managed international common stocks.
(3) | This category is comprised of funds not actively managed that track the S&P 500.
(4) | This category is comprised of funds not actively managed that are invested in foreign and domestic equities.
(5) | This category is comprised of foreign and domestic equities and foreign and domestic fixed interest assets.
Weighted-average assumptions used to determine benefit obligations and net periodic benefit costs | Weighted-average assumptions used to determine benefit obligations as of December 31, are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
Discount rate | 3.79 | % |  | 4.39 | % |  | 4.41 | % |  | 4.94 | % |  | 3.27 | % |  | 4.20 | %
Rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 4.50 | % |  | 4.60 | % |  | — |  |  | — |
Weighted-average assumptions used to determine net periodic benefit costs as of December 31 are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010
Discount rate | 4.39 | % |  | 5.39 | % |  | 5.88 | % |  | 4.94 | % |  | 5.39 | % |  | 5.69 | % |  | 4.20 | % |  | 5.00 | % |  | 5.60 | %
Expected long-term rate of return on plan assets | 7.70 | % |  | 7.70 | % |  | 7.70 | % |  | 4.80 | % |  | 5.20 | % |  | 5.50 | % |  | — |  |  | — |  |  | — |
Rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 3.00 | % |  | 4.60 | % |  | 5.10 | % |  | 5.10 | % |  | — |  |  | — |  |  | — |
Accumulated benefit obligations for all defined benefit plans | The accumulated benefit obligations as of December 31, for all defined benefit plans are as follows:
| 2012 |  | 2011
U.S. Pension Plans | $ | 46,907 |  |  | $ | 42,909 |
U.K. Pension Plan | 8,837 |  |  | 7,858 |
German Pension Plan | 878 |  |  | 652 |
Plans with accumulated benefit obligation in excess of plan assets | Information for our plans with an accumulated benefit obligation in excess of plan assets as of December 31, is as follows:
| U.S. Pension Plans |  | Non-U.S. Plans
| 2012 |  | 2011 |  | 2012 |  | 2011
Projected benefit obligation | $ | 48,824 |  |  | $ | 44,280 |  |  | $ | 10,011 |  |  | $ | 8,775 |
Accumulated benefit obligation | 46,907 |  |  | 42,909 |  |  | 9,715 |  |  | 8,510 |
Fair value of plan assets | 46,942 |  |  | 28,237 |  |  | 8,855 |  |  | 7,738 |
Assumed healthcare cost trend rates | Assumed healthcare cost trend rates as of December 31, are as follows:
| 2012 |  | 2011
Healthcare cost trend rate assumption for the next year | 9.17 | % |  | 10.14 | %
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) | 5.00 | % |  | 5.00 | %
Year that the rate reaches the ultimate trend rate | 2031 |  |  | 2031 |
Effect of on-percentage-point change in assumed healthcare cost trends | To illustrate, a one-percentage-point change in assumed healthcare cost trends would have the following effects:
| 1-Percentage- Point Decrease |  | 1-Percentage- Point Increase
Effect on total of service and interest cost components | $ | (54 | ) |  | $ | 61 |
Effect on postretirement benefit obligation | $ | (1,076 | ) |  | $ | 1,227 |
Changes in benefit obligations and plan assets and funded status | Summaries related to changes in benefit obligations and plan assets and to the funded status of our defined benefit and postretirement medical benefit plans are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2012 |  | 2011 |  | 2012 |  | 2011 |  | 2012 |  | 2011
Change in benefit obligation: |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year | $ | 44,280 |  |  | $ | 38,885 |  |  | $ | 8,775 |  |  | $ | 8,394 |  |  | $ | 13,708 |  |  | $ | 13,423 |
Service cost | 686 |  |  | 651 |  |  | 138 |  |  | 133 |  |  | 142 |  |  | 132 |
Interest cost | 1,928 |  |  | 2,013 |  |  | 437 |  |  | 465 |  |  | 551 |  |  | 612 |
Plan participants' contributions | — |  |  | — |  |  | 24 |  |  | 24 |  |  | — |  |  | — |
Plan amendments | — |  |  | 233 |  |  | — |  |  | — |  |  | — |  |  | — |
Actuarial loss | 3,893 |  |  | 4,216 |  |  | 595 |  |  | 40 |  |  | 926 |  |  | 72 |
Foreign exchange | — |  |  | — |  |  | 411 |  |  | (63 | ) |  | — |  |  | — |
Benefits paid | (1,963 | ) |  | (1,718 | ) |  | (369 | ) |  | (218 | ) |  | (1,237 | ) |  | (531 | )
Benefit obligation at end of year | $ | 48,824 |  |  | $ | 44,280 |  |  | $ | 10,011 |  |  | $ | 8,775 |  |  | $ | 14,090 |  |  | $ | 13,708 |
Change in fair value of plan assets and net accrued liabilities:
Fair value of plan assets at beginning of year | $ | 28,237 |  |  | $ | 29,483 |  |  | $ | 7,738 |  |  | $ | 6,917 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | 3,818 |  |  | 357 |  |  | 738 |  |  | 715 |  |  | — |  |  | — |
Employer contributions | 16,850 |  |  | 115 |  |  | 346 |  |  | 352 |  |  | 1,237 |  |  | 531 |
Plan participants' contributions | — |  |  | — |  |  | 24 |  |  | 24 |  |  | — |  |  | — |
Foreign exchange | — |  |  | — |  |  | 378 |  |  | (52 | ) |  | — |  |  | — |
Benefits paid | (1,963 | ) |  | (1,718 | ) |  | (369 | ) |  | (218 | ) |  | (1,237 | ) |  | (531 | )
Fair value of plan assets at end of year | 46,942 |  |  | 28,237 |  |  | 8,855 |  |  | 7,738 |  |  | — |  |  | — |
Funded status at end of year | $ | (1,882 | ) |  | $ | (16,043 | ) |  | $ | (1,156 | ) |  | $ | (1,037 | ) |  | $ | (14,090 | ) |  | $ | (13,708 | )
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent Assets | $ | 698 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Current liabilities | 145 |  |  | 129 |  |  | 39 |  |  | 38 |  |  | 904 |  |  | 841 |
Noncurrent liabilities | 2,435 |  |  | 15,914 |  |  | 1,117 |  |  | 999 |  |  | 13,186 |  |  | 12,867 |
Net accrued liability | $ | 1,882 |  |  | $ | 16,043 |  |  | $ | 1,156 |  |  | $ | 1,037 |  |  | $ | 14,090 |  |  | $ | 13,708 |
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Prior service cost | $ | 224 |  |  | $ | 606 |  |  | $ | — |  |  | $ | — |  |  | $ | (109 | ) |  | $ | (689 | )
Net actuarial loss | 13,711 |  |  | 12,488 |  |  | 246 |  |  | 2 |  |  | 2,789 |  |  | 1,921 |
Accumulated other comprehensive income | $ | 13,935 |  |  | $ | 13,094 |  |  | $ | 246 |  |  | $ | 2 |  |  | $ | 2,680 |  |  | $ | 1,232 |
Components of the net periodic benefit cost | The components of the net periodic benefit cost for the three years ended December 31, were as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010
Service cost | $ | 686 |  |  | $ | 651 |  |  | $ | 657 |  |  | $ | 138 |  |  | $ | 133 |  |  | $ | 117 |  |  | $ | 142 |  |  | $ | 132 |  |  | $ | 121 |
Interest cost | 1,928 |  |  | 2,013 |  |  | 2,032 |  |  | 437 |  |  | 465 |  |  | 434 |  |  | 551 |  |  | 612 |  |  | 681 |
Expected return on plan assets | (2,279 | ) |  | (2,325 | ) |  | (2,340 | ) |  | (387 | ) |  | (376 | ) |  | (346 | ) |  | — |  |  | — |  |  | — |
Amortization of net actuarial loss | 1,131 |  |  | 27 |  |  | 22 |  |  | — |  |  | — |  |  | — |  |  | 57 |  |  | — |  |  | — |
Amortization of prior service cost | 382 |  |  | 550 |  |  | 554 |  |  | — |  |  | — |  |  | — |  |  | (580 | ) |  | (580 | ) |  | (579 | )
Foreign currency | — |  |  | — |  |  | — |  |  | 16 |  |  | (18 | ) |  | (65 | ) |  | — |  |  | — |  |  | — |
Net periodic benefit cost | $ | 1,848 |  |  | $ | 916 |  |  | $ | 925 |  |  | $ | 204 |  |  | $ | 204 |  |  | $ | 140 |  |  | $ | 170 |  |  | $ | 164 |  |  | $ | 223 |
Changes in accumulated other comprehensive income | The changes in accumulated other comprehensive income for the three years ended December 31, were as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010
Prior service cost | $ | — |  |  | $ | 233 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Net actuarial loss (gain) | 2,355 |  |  | 6,184 |  |  | 573 |  |  | 244 |  |  | (300 | ) |  | 143 |  |  | 926 |  |  | 72 |  |  | (892 | )
Amortization of prior service cost | (382 | ) |  | (550 | ) |  | (554 | ) |  | — |  |  | — |  |  | — |  |  | 580 |  |  | 580 |  |  | 580 |
Amortization of prior transition asset | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of net actuarial (loss) gain | (1,132 | ) |  | (27 | ) |  | (22 | ) |  | — |  |  | — |  |  | — |  |  | (57 | ) |  | — |  |  | — |
Total recognized in other comprehensive income | $ | 841 |  |  | $ | 5,840 |  |  | $ | (3 | ) |  | $ | 244 |  |  | $ | (300 | ) |  | $ | 143 |  |  | $ | 1,449 |  |  | $ | 652 |  |  | $ | (312 | )
Total recognized in net periodic benefit cost and other comprehensive income | $ | 2,689 |  |  | $ | 6,756 |  |  | $ | 922 |  |  | $ | 448 |  |  | $ | (96 | ) |  | $ | 283 |  |  | $ | 1,619 |  |  | $ | 816 |  |  | $ | (89 | )
Expected future benefit payments | The following benefit payments, which reflect expected future service, are expected to be paid for our U.S. and Non-U.S. plans:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
2013 | $ | 1,813 |  |  | $ | 211 |  |  | $ | 904 |
2014 | 2,057 |  |  | 252 |  |  | 977 |
2015 | 2,373 |  |  | 257 |  |  | 1,070 |
2016 | 2,544 |  |  | 263 |  |  | 1,150 |
2017 | 2,683 |  |  | 304 |  |  | 1,188 |
2018 to 2022 | 14,864 |  |  | 1,966 |  |  | 5,575 |
Total | $ | 26,334 |  |  | $ | 3,253 |  |  | $ | 10,864 |
Amounts in accumulated other comprehensive income to be recognized over next fiscal year | The following amounts are included in accumulated other comprehensive income as of December 31, 2012 and are expected to be recognized as components of net periodic benefit cost during 2013:
| Pension Benefits |  | Postretirement Medical Benefits
Net loss | $ | 1,754 |  |  | $ | 200 |
Net prior service cost (credit) | 73 |  |  | (103 | )

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- Definition Tabular disclosure of benefit obligations including accumulated benefit obligation and projected benefit obligation. + 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 (e) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of accumulated benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation exceeds the fair value 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 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2417-114920 + Details
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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + 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)(5) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + 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 (s) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on 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 (k) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4, 7, 16, 20, 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=21916443&loc=d3e4179-114921 Reference 4: 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=21915506&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2410-114920 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2439-114920 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 6, 7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + 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 (f) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved. + 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 (l) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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