It covers narrative portion of short-term bank loans.

No definition available.

Name:	seii_ShortTermBankLoansTextualAbstract
Namespace Prefix:	seii_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (210.5-03(11))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

+ Details

Name:	us-gaap_LongTermLoansPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

+ Details

Name:	us-gaap_SecurityDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Description of the short-term debt arrangement, and disclosures pertaining to the underlying arrangements, including repayment terms, interest rates, restrictions on assets and activities, debt covenants, and other matters important to users of the financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_ShortTermDebtTerms
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Short-Term Bank Loans (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
Short-Term Bank Loans (Details Textual) - USD ($)	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Short-Term Bank Loans (Textual)
Interest related to the short-term bank loans	$ 173,276	$ 118,894	$ 345,083	$ 241,708
Terms of short term bank loans			36 months	36 months
Long-term portion of loan	$ 119,574		$ 119,574		$ 244,910
25th - 36th month [Member]
Short-Term Bank Loans (Textual)
Monthly installment			13,733
25th - 36th month [Member] \| RMB [Member]
Short-Term Bank Loans (Textual)
Monthly installment			98,000
13th - 24th month [Member]
Short-Term Bank Loans (Textual)
Monthly installment			19,338
13th - 24th month [Member] \| RMB [Member]
Short-Term Bank Loans (Textual)
Monthly installment			138,000
1st - 12th month [Member]
Short-Term Bank Loans (Textual)
Monthly installment			29,427
1st - 12th month [Member] \| RMB [Member]
Short-Term Bank Loans (Textual)
Monthly installment			$ 210,000
Loan from Bank of China, due on November 20, 2019 One [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Nov. 20, 2019
Loan from Bank of China, due on November 20, 2019 One [Member] \| November 20, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	4.60%		4.60%
Loan from Bank of Wuxi Nongshuang, due on February 22, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Feb. 22, 2019
Loan from Bank of Wuxi Nongshuang, due on February 22, 2019 [Member] \| February 22, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	5.87%		5.87%
Loan from Bank of China, due on November 25, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Nov. 25, 2019
Loan from Bank of China, due on November 25, 2019 [Member] \| November 25, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	4.60%		4.60%
Loan from Bank of Wuxi Nongshuang, due on November 6, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Nov. 06, 2019
Loan from Bank of Wuxi Nongshuang, due on November 6, 2019 [Member] \| November 6, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	5.87%		5.87%
Loan from Bank of Communication, due on September 25, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Sep. 25, 2019
Loan from Bank of Communication, due on September 25, 2019 [Member] \| September 25, 2019 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	4.35%		4.35%
Loan from Zhongli International Finance Corporation [Member]
Short-Term Bank Loans (Textual)
Line of credit	$ 630,583		$ 630,583
Security deposit	126,117		126,117
Loan from Zhongli International Finance Corporation [Member] \| RMB [Member]
Short-Term Bank Loans (Textual)
Line of credit	4,500,000		4,500,000
Security deposit	$ 900,000		$ 900,000
Loan from Bank of Communication, due on September 20, 2020 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, maturity date			Sep. 20, 2020
Loan from Bank of Communication, due on September 20, 2020 [Member] \| September 20, 2020 [Member]
Short-Term Bank Loans (Textual)
Short-term bank loans, interest rate, stated percentage	3.915%		3.915%