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Note 10 - Product Warranty Obligations - Deferred Product Obligations (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | ---
Current portion - other accrued liabilities | $ 26,948 |  | $ 25,396 |  |  |
Long-term portion - other long-term liabilities | 18,376 |  | 16,389 |  |  |
Total | 45,324 | $ 43,562 | 41,785 | $ 38,660 | $ 36,319 | $ 35,422
Current portion - other accrued liabilities | 13,925 |  | 13,646 |  |  |
Long-term portion - other long-term liabilities | 60,592 |  | 54,694 |  |  |
Total | $ 74,517 | $ 70,844 | $ 68,340 | $ 63,007 | $ 60,113 | $ 57,854

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- Definition Amount as of the balance sheet date of the aggregate extended product warranty liability. Does not include the ending balance for the standard product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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