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Note 16 - Income Tax (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
One Time Stock Based Compensation and Transaction Costs |  | $ 49,465 |
Deferred Tax Assets, Net | $ 67,671 | 81,080 |
Undistributed Earnings of Foreign Subsidiaries | 21,886 | 21,642 |
Unrecognized Tax Benefits | 2,292 | 2,519 | $ 3,624
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 2,292 | 2,519 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 234 | 174 | $ 106
Recovery of Income Tax Interest and Penalties | 58 | 106 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 350 | $ 174 |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ (581) |  |
Domestic Tax Authority [Member] | Canada Revenue Agency [Member] | Minimum [Member] |  |  |
Income Tax Return Examination Period | 4 years |  |
Domestic Tax Authority [Member] | Canada Revenue Agency [Member] | Maximum [Member] |  |  |
Income Tax Return Examination Period | 7 years |  |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Minimum [Member] |  |  |
Income Tax Return Examination Period | 3 years |  |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Maximum [Member] |  |  |
Income Tax Return Examination Period | 5 years |  |
Foreign Tax Authority [Member] | Other Foreign Tax Authorities [Member] |  |  |
Income Tax Return Examination Period | 4 years |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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