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Other Liabilities
 6 Months Ended
Jun. 30, 2016
Other Liabilities [Abstract]  
Other Liabilities
10.Other liabilities

Other liabilities include the following (in thousands):

    
June 30,
2016
    
December 31,
2015
  
Retirement plan obligations
 
$
21,982
  
$
2,654
 
Due to dissenting shareholder
  
9,436
   
-
 
Non-current portion of deferred revenues
  
8,968
   
4,156
 
Other
  
10,128
   
2,229
 
Other liabilities
 
$
50,514
  
$
9,039