Short-term investments (Tables)

12 Months Ended

Dec. 31, 2019

Short-term investments

Schedule of short-term investments

	As of December 31, 2019
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Term deposits	$	175	$	—	$	—	$	175
Total	$	175	$	—	$	—	$	175

	As of December 31, 2018
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Available for sale securities	$	50	$	—	$	—	$	50
Term deposits		175		—		—		175
Total	$	225	$	—	$	—	$	225