Note 8 - Accrued Expenses (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
    December 31,
    2016   2015
Compensation   $
2,144
     $
2,107
  
Benefits / self-insurance reserve    
180
      
250
  
Paid time off    
990
      
965
  
Commissions payable    
260
      
319
  
Other    
1,124
      
1,418
  
    $
4,698
     $
5,059