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Note 4 - Redeemable Noncontrolling Interest (Tables) | 6 Months Ended
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Jun. 30, 2018
Notes Tables |
Redeemable Noncontrolling Interest [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Balance at beginning of period |  | $ | 54,404 |  |  | $ | 33,566 |  |  | $ | 43,929 |  |  | $ | 33,138 |
Net income |  |  | 848 |  |  |  | 92 |  |  |  | 822 |  |  |  | 210 |
Foreign currency translation |  |  | (4,522 | ) |  |  | 4,433 |  |  |  | (1,686 | ) |  |  | 5,357 |
Redemption value adjustment |  |  | 2,305 |  |  |  | (295 | ) |  |  | 9,970 |  |  |  | (909 | )
Balance at end of period |  | $ | 53,035 |  |  | $ | 37,796 |  |  | $ | 53,035 |  |  | $ | 37,796 |

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- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
Name: | us-gaap_RedeemableNoncontrollingInterestTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration