Accounts Receivable (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Accounts Receivable (Textual)
Bad debt expense	$ 4,381,441	$ 1,318,204

Amount of expense related to allowance for doubtful accounts.

No definition available.

Name:	seii_AllowanceForDoubtfulAccounts
Namespace Prefix:	seii_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration