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Note 21 - Commitments and Contingencies
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Commitments and Contingencies Disclosure [Text Block]
21.
Commitments and contingencies
 
(a) Lease commitments
Minimum operating lease payments are as follows:
 
Year ending December 31    
2017   $
63,378
  
2018    
53,367
  
2019    
43,620
  
2020    
38,600
  
2021    
33,068
  
Thereafter    
61,959
  
    $
293,992
  
 
(b) Purchase commitments
Minimum contractual purchase commitments are as follows:
 
Year ending December 31    
2017   $
5,016
  
2018    
3,412
  
    $
8,428
  
 
(c) Contingencies
In the normal course of operations, the Company is subject to routine claims and litigation incidental to its business. Litigation currently pending or threatened against the Company includes disputes with former employees and commercial liability claims related to services provided by the Company. The Company believes resolution of such proceedings, combined with amounts set aside, will not have a material impact on the Company’s financial condition or the results of operations.