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Note 12 - Redeemable Non-controlling Interests (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Redeemable Noncontrolling Interest, Equity, Carrying Amount	$ 145,489	$ 134,803
Subordinate Non-controlling Interest Shares	2,100,000
Income (Loss) from Continuing Operations, Per Diluted Share	$ 1.27	$ 1.76
Pro Forma [Member]
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.88
Redemption Amount [Member]
Redeemable Noncontrolling Interest, Equity, Carrying Amount	$ 129,087	$ 126,007

X

- Definition

Represents the subordinate shares applied to non controlling interest.

+ References

No definition available.

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- Definition

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (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 (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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