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Prepayments and Other Current Assets
9 Months Ended
Sep. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepayments and Other Current Assets Prepayments and Other Current Assets
The components of prepayments and other current assets were as follows at the dates indicated (in thousands):
September 30, December 31,
20182017
Insurance premiums $274 $425 
Rents, licenses and other 997 839 
Total $1,271 $1,264