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Note 18 - Financial Instruments - Change in Fair Value of Contingent Consideration Liability (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Fair value adjustments (note 4) | $ (4,365) | $ (6,487)
Less: current portion | 17,122 | 18,657
Non-current portion | 76,743 | 31,643
Fair Value, Inputs, Level 3 [Member] |  |
Balance | 50,300 | 32,266
Amounts recognized on acquisitions | 61,525 | 21,477
Fair value adjustments (note 4) | 1,675 | 1,054
Resolved and settled in cash | (18,757) | (6,169)
Other | (877) | 1,672
Balance | 93,865 | 50,300
Less: current portion | 17,122 | 18,657
Non-current portion | $ 76,743 | $ 31,643

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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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