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Other current assets and other long-term assets
3 Months Ended
Mar. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other current assets and other long-term assets
Other current assets and other long-term assets

Other current assets consisted of the following (in thousands):
 
March 31,
 
December 31,
 
2017
 
2016
 

 
 
Prepaid expenses
$
1,575

 
$
1,879

Deposits and other receivables
733

 
759

Interest receivable
157

 
183

 
$
2,465

 
$
2,821



The other long-term assets balance consisted of $2.2 million and $3.3 million in deposits paid in conjunction with the Company's research and development activities as of March 31, 2017 and December 31, 2016, respectively.