Short-term investments (Tables)

12 Months Ended

Dec. 31, 2017

	As of December 31, 2017
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Short-term investments:
Available-for-sale securities	$	76	$	—	$	(26	)	$	50
Term deposits		60		—		—			60

Total	$	136	$	—	$	(26	)	$	110

	As of December 31, 2016
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Short-term investments:
Available-for-sale securities	$	51,094	$	—	$	(18	)	$	51,076
Term deposits		30		—		—			30

Total	$	51,124	$	—	$	(18	)	$	51,106

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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