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Contractual interest rate for funds borrowed, under the debt agreement which are calculated monthly and paid in arrears.

No definition available.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 470
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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Amount of the required periodic payments including both interest and principal payments.

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Balance Type:	debit
Period Type:	duration

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Data Type:	dtr-types:percentItemType
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Period Type:	instant

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Name:	us-gaap_LongtermDebtTypeAxis=ensv_RealEstateLoan1Member
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