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Note G - Pension and Other Postretirement Benefits - Allocation of Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Plan Fair Value Assets | $ 83,318 | $ 68,275
Plan Fair Value Assets, Percentage | 100.00% | 100.00%
Fair Value, Inputs, Level 1 [Member] |  |
Plan Fair Value Assets | $ 42,691 | $ 22,863
Plan Fair Value Assets, Percentage | 51.00% | 33.00%
Fair Value, Inputs, Level 2 [Member] |  |
Plan Fair Value Assets | $ 40,597 | $ 45,412
Plan Fair Value Assets, Percentage | 49.00% | 67.00%
Fair Value, Inputs, Level 3 [Member] |  |
Plan Fair Value Assets | $ 30 |
Plan Fair Value Assets, Percentage |  |
Equity Securities [Member] |  |
Plan Fair Value Assets, Percentage |  |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Plan Fair Value Assets | $ 19,752 | $ 16,908
Plan Fair Value Assets, Percentage | 24.00% | 25.00%
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Plan Fair Value Assets | $ 30 |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Plan Fair Value Assets | $ 11,805 | $ 1,468
Plan Fair Value Assets, Percentage | 14.00% | 2.00%
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Plan Fair Value Assets | $ 40,597 | $ 41,984
Plan Fair Value Assets, Percentage | 49.00% | 62.00%
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Plan Fair Value Assets |  | $ 3,476
Plan Fair Value Assets, Percentage |  | 5.00%
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Plan Fair Value Assets | $ 11,134 | $ 1,011
Plan Fair Value Assets, Percentage | 13.00% | 1.00%
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Plan Fair Value Assets |  | $ 3,428
Plan Fair Value Assets, Percentage |  | 5.00%

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: 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=64937038&loc=d3e12355-114930 Reference 2: 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=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + 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=65897934&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=65897934&loc=d3e1928-114920 + Details
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