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Note 9 - Acquisition of Business - Purchase Price (Details) - USD ($) $ in Thousands |  |  |  | 6 Months Ended
--- | --- | --- | --- | ---
May 02, 2018 | Dec. 01, 2017 | Mar. 08, 2016 | Jun. 30, 2018 | Jun. 30, 2017
Cash consideration at closing, net of cash acquired |  |  |  | $ 85,597 |
CID Resources [Member] |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 84,430 |  |  |  |
Superior common stock issued | 3,763 |  |  |  |
Cash and working capital adjustment | 2,496 |  |  |  |
Business Combination, Consideration Transferred, Total | $ 90,689 |  |  |  |
BAMKO [Member] |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 15,200 |  |
Superior common stock issued |  |  | 4,558 |  |
Business Combination, Consideration Transferred, Total |  |  | 24,924 |  |
Cash consideration at closing, net of cash acquired |  |  | 15,161 |  |
Contingent consideration |  |  | $ 5,205 |  |
Tangerine [Member] |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 7,200 |  |  |
Superior common stock issued |  | 1,657 |  |  |
Business Combination, Consideration Transferred, Total |  | 12,088 |  |  |
Cash consideration at closing, net of cash acquired |  | 7,222 |  |  |
Contingent consideration |  | $ 3,209 |  |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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- Definition Amount of increase (decrease) in the value of right to a contingent consideration asset. + 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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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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