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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Goodwill [Table Text Block] |
BALANCE JANUARY 1, 2017 |  |  | ACQUISITIONS |  |  | IMPAIRMENT |  |  | FOREIGN CURRENCY TRANSLATION |  |  | BALANCE DECEMBER 31, 2017 |
(in thousands) |
$ | 61,218 |  |  | $ | 0 |  |  | $ | 0 |  |  |  | 7,536 |  |  | $ | 68,754 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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