Balance Sheet Information - Prepaid Expense and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Balance Sheet Information
Prepaid insurance and legal fees	$ 743	$ 219
Prepaid software license and support	691	619
Prepaid corporate taxes	191	0
Prepaid expenses-other	702	290
Valued added tax	578	609
Other receivables	61	0
Other assets	706	347
Prepaid expenses and other current assets	$ 3,672	$ 2,084

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Amount of asset related to consideration paid in advance for value added taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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