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Assets of Plans Invested in Classes of Securities (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Jan. 01, 2011
Elgin Plan |  |
Target Allocation |  |
Equity | 48.00% |
Fixed income | 40.00% |
Money market | 4.00% |
Other (real estate & commodities) | 8.00% |
Defined Benefit Plan, Assets Target Allocations, Total, Total | 100.00% |
Percentage of Plan Assets |  |
Equity | 49.00% | 48.00%
Fixed income | 37.00% | 32.00%
Money market | 5.00% | 12.00%
Other (real estate & commodities) | 9.00% | 8.00%
Defined Benefit Plan, Actual Plan Asset Allocations, Total | 100.00% | 100.00%
Smithville Plan |  |
Target Allocation |  |
Equity | 48.00% |
Fixed income | 40.00% |
Money market | 4.00% |
Other (real estate & commodities) | 8.00% |
Defined Benefit Plan, Assets Target Allocations, Total, Total | 100.00% |
Percentage of Plan Assets |  |
Equity | 51.00% | 56.00%
Fixed income | 37.00% | 36.00%
Money market | 4.00% |
Other (real estate & commodities) | 8.00% | 8.00%
Defined Benefit Plan, Actual Plan Asset Allocations, Total | 100.00% | 100.00%
Wrexham Plan |  |
Target Allocation |  |
Equity | 50.00% |
Fixed income | 50.00% |
Defined Benefit Plan, Assets Target Allocations, Total, Total | 100.00% |
Percentage of Plan Assets |  |
Equity | 66.00% |
Fixed income | 27.00% |
Money market | 7.00% |
Defined Benefit Plan, Actual Plan Asset Allocations, Total | 100.00% |

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- Definition The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e2446-114920 Reference 3: 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=6962843&loc=d3e1928-114920 + Details
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