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Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Property Plant And Equipment Estimated Useful Lives [Table Text Block]

 

 

 

Estimated Useful Lives

Buildings and building improvements

 

5-40

Land improvements

 

4-20

Leasehold improvements

 

3-20

Equipment

 

3-20

Tooling

 

1-3

Furniture and fixtures

 

5-10