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Segment Information (Geographic Information) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Revenues $ 32,370 $ 5,197  
Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Revenues 32,370 5,197  
Long-Lived Assets 58,019   $ 69,110
Operating Segments [Member] | United States [Member]      
Segment Reporting Information [Line Items]      
Revenues 32,370 $ 5,197  
Long-Lived Assets 26,772   48,126
Operating Segments [Member] | Mexico [Member]      
Segment Reporting Information [Line Items]      
Long-Lived Assets $ 31,247   $ 20,984