XML 223 R9999.htm IDEA: XBRL DOCUMENT
v3.20.2

Label | Element | Value
--- | --- | ---
SCCG [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | us-gaap_DebtInstrumentInterestRateStatedPercentage | 3.846%
Holdco [Member] |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid | $ 10,000,000
JSCCG [Member] |  |
Debt Instrument, Interest Rate | tve_DebtInstrumentInterestRate | 4.626%

X
- Definition Debt Instrument, Interest Rate + References No definition available. + Details
Name: | tve_DebtInstrumentInterestRate
Namespace Prefix: | tve_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=tve_SCCGMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=tve_HoldcoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=tve_JsccgMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |