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Note 5 - Revenue from Contracts with Customers 1 (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 04, 2020 | Sep. 29, 2019 | Oct. 04, 2020 | Sep. 29, 2019 | Dec. 31, 2019
Revenue, Remaining Performance Obligation, Amount | $ 35,767,000 |  | $ 35,767,000 |  |
Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total | 1,739,000 |  | 1,739,000 |  |
Contract with Customer, Liability, Total | 5,681,000 |  | 5,681,000 |  | $ 7,504,000
Contract with Customer, Liability, Revenue Recognized | $ 2,837,000 | $ 2,408,000 | $ 6,680,000 | $ 5,035,000 |
Other Current Assets [Member] |  |  |  |  |
Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total |  |  |  |  | 906,000
Accrued Liabilities [Member] |  |  |  |  |
Contract with Customer, Liability, Current |  |  |  |  | 5,769,000
Other Noncurrent Liabilities [Member] |  |  |  |  |
Contract with Customer, Liability, Noncurrent |  |  |  |  | $ 1,735,000

X
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130533-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
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