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Note 18 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Long-term Purchase Commitment [Table Text Block]

December 31		Amount
2017			120,464,000
2018			36,786,000
Total			157,250,000

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- Definition

Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount.

+ References

No definition available.

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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