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Income Taxes - Schedule of Valuation Allowance (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Deferred Tax Asset, Valuation Allowance [Roll Forward] |  |  |
Balance at Beginning of Period | $ 20,951 | $ 17,519 | $ 15,255
Additions Charged to Expense | 8,437 | 7,494 | 2,978
Valuation Allowance Reversal | (2,904) | (3,145) | (99)
Business Combination Adjustments | 6,384 | (688) | 1,157
Other | (940) | (229) | (1,772)
Balance at End of Period | $ 31,928 | $ 20,951 | $ 17,519

X
- Definition Deferred Tax Asset, Valuation Allowance + References No definition available. + Details
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Namespace Prefix: | ens_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Valuation Allowance, Deferred Tax Asset, Additions Charged to Expense + References No definition available. + Details
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Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Valuation Allowance, Deferred Tax Asset, Reversal + References No definition available. + Details
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Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Valuation Allowances, Deferred Tax Asset, Acquisitions + References No definition available. + Details
Name: | ens_ValuationAllowancesDeferredTaxAssetAcquisitions
Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration