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Note 5 - Employee Benefit Plans - Investment Policy Allocation (Details) | Dec. 31, 2022
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Large Cap US Equity [Member] |
Investment policy allocation | 17.00%
Large Cap US Equity [Member] | Maximum [Member] |
Investment policy allocation | 20.00%
Small Cap US Equity [Member] |
Investment policy allocation | 8.00%
Small Cap US Equity [Member] | Maximum [Member] |
Investment policy allocation | 10.00%
Non-U.S. equity [Member] |
Investment policy allocation | 25.00%
Non-U.S. equity [Member] | Maximum [Member] |
Investment policy allocation | 30.00%
U.S. Fixed Income [Member] |
Investment policy allocation | 18.00%
U.S. Fixed Income [Member] | Maximum [Member] |
Investment policy allocation | 23.00%
Emerging Market Debt [Member] |
Investment policy allocation | 5.00%
Emerging Market Debt [Member] | Maximum [Member] |
Investment policy allocation | 8.00%
Real Estate [Member] |
Investment policy allocation | 15.00%
Real Estate [Member] | Maximum [Member] |
Investment policy allocation | 18.00%
Absolute Return [Member] |
Investment policy allocation | 5.00%
Absolute Return [Member] | Maximum [Member] |
Investment policy allocation | 7.00%
Company Stock/Real Return [Member] |
Investment policy allocation | 7.00%
Company Stock/Real Return [Member] | Maximum [Member] |
Investment policy allocation | 13.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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