Long-term and current receivables

3 Months Ended

Mar. 31, 2017

Long-term and current receivables

Long-term and current receivables

11.Long-term and current receivables

(in thousands)	As of December 31, 2016		As of March 31, 2017
Deposits	$	420	$	424
Total long-term receivables	$	420	$	424
Research premium	5,346		6,910
VAT and other taxes	46		316
Receivables from grant revenue	144		—
Other receivables	25		222
Total current receivables	$	5,561	$	7,448
Total	$	5,981	$	7,872

Long-term receivables relate to rent deposits made on the office building in Vienna, Austria and King of Prussia, Pennsylvania, United States.

Current receivables are all due within one year. No receivables are past due or impaired.

As of March 31, 2017 and December 31, 2016, no receivables were pledged.