Revenue - Disaggregated Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 3,778	$ 10,155
United States
Disaggregation of Revenue [Line Items]
Total Revenues	3,097	8,815
Latin America
Disaggregation of Revenue [Line Items]
Total Revenues	146	175
Europe
Disaggregation of Revenue [Line Items]
Total Revenues	393	617
Asia
Disaggregation of Revenue [Line Items]
Total Revenues	142	548
Total Foreign Revenues
Disaggregation of Revenue [Line Items]
Total Revenues	$ 681	$ 1,340