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Note 3 - Prepaid Expenses and Other Current Assets
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Prepaid Expenses and Other Assets [Text Block]
(
3
)     Prepaid Expenses and Other
Current
Assets
 
Prepaid expenses and other current assets consist of the following (in thousands):
 
   
2016
    
2015
  
Prepaid rent
  
$
7,191
   
$
7,852
 
Short-term investments
  
 
-
   
 
1,458
 
Other
  
 
5,546
   
 
7,002
 
Total
  
$
12,737
   
$
16,312