Note 12 - Major Customers (Tables)
 12 Months Ended
Dec. 31, 2013
Risks and Uncertainties [Abstract]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
   

Revenue

 

Accounts Receivable, Net

   

Year Ended December 31,

 

As of December 31,

Customers

 

2013

 

2012

 

2011

 

2013

 

2012

A

 

32%

 

32%

 

27%

 

32%

 

34%

B

 

*

 

*

 

*

 

*

 

11%

C

 

10%

 

*

 

*

 

17%

 

*