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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Note 17 - Subsequent Events On April 14, 2021, Swedish Companies Registration Office (Bolagsverket) registered the closure of the GSE Power Systems AB liquidation. We became eligible for the Employee Retention Credit for the first quarter of 2021 and have applied for a refund of $2.4 million in April 2021. We believe we are eligible to receive the employee retention credit in the second quarter of 2021 and are currently reducing our payroll taxes as permitted under the Coronavirus Aid, Relief and Economic Security Act.