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Other long-term liabilities
 12 Months Ended
Dec. 31, 2014
Other Liabilities Disclosure [Abstract]  
Other long-term liabilities
Other long-term liabilities
Other long-term liabilities consisted of the following (in thousands):
December 31:
 
2014
 
2013
Liability for severance pay
 
$
3,591

 
$
3,658

Long-term portion of deferred revenue
 
1,330

 
1,444

Other
 
350

 
134

Total other long-term liabilities
 
$
5,271

 
$
5,236