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Note 3 - Discontinued Operations (Details Textual) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 26, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Escrow Deposits Related to Property Sales |  | $ 4,465 |  |
Restructuring Charges |  | $ 881 | $ 990 |
Atchison Facility [Member] |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 37,200 |  |  |
Restructuring Charges |  |  |  | 600
Atchison Facility [Member] | Cost of Sales [Member] |  |  |  |
Restructuring Charges |  |  |  | 500
Atchison Facility [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |
Restructuring Charges |  |  |  | $ 100
Atchison Facility [Member] | Until Receipt by Buyer [Member] |  |  |  |
Escrow Deposits Related to Property Sales | 750 |  |  |
Atchison Facility [Member] | To Secure Indemnification Obligations [Member] |  |  |  |
Escrow Deposits Related to Property Sales | $ 3,700 |  |  |

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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
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- Definition Escrow deposits related to property sales in noncash investing and financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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