Concentrations (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Customer [Member] \| Revenue Benchmark [Member]
Concentrations (Details) [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Vendors [Member] \| Purchase [Member]
Concentrations (Details) [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

No definition available.

Name:	seii_ConcentrationRiskPercentage2
Namespace Prefix:	seii_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration