Name:	ocln_AssetsHeldforSaleContinuingOperationsDetailsLineItems
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Period Type:	duration

Initial payment.

No definition available.

Name:	ocln_InitialPayment
Namespace Prefix:	ocln_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Number of warrants shares.

No definition available.

Name:	ocln_NumberOfWarrantsShares
Namespace Prefix:	ocln_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Private neighborhood development.

No definition available.

Name:	ocln_PrivateNeighborhoodDevelopment
Namespace Prefix:	ocln_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Remaining initial payment.

No definition available.

Name:	ocln_RemainingInitialPayment
Namespace Prefix:	ocln_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase from purchase of accounts receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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

Aggregate dividends declared during the period for each share of common stock outstanding.

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Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Amount of decrease from sale of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time and other income.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

No definition available.

Name:	us-gaap_DeferredGainOnSaleOfProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

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Period Type:	instant

Amount of long-term debt classified as other.

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Name:	us-gaap_OtherLongTermDebt
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount due from parties in nontrade transactions, classified as other.

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-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
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Name:	us-gaap_OtherReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of cash outflow for fees classified as other.

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Name:	us-gaap_PaymentsForFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Number of common shares issuable upon conversion of preferred stock.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-Name Accounting Standards Codification
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Cash received for commissions during the current period.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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-Topic 230
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Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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This element represents those amounts set aside for the repair and replacement of real or personal property in the foreseen future. Such amount may be funded from sales revenue (for example; timeshare sales) or operating revenues; in a lump sum or installments (such as monthly); as per internal policy (for example: hotel operators), as required by contractual agreement (for example: sales contract); or by the terms of debt agreements.

No definition available.

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

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
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-Topic 860
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-Name Accounting Standards Codification
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-Publisher FASB
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481260/860-50-45-1

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Name:	us-gaap_ServicingAssetAtFairValueAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Balance Type:
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Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_StatementClassOfStockAxis=ocln_SeriesTPreferredStockMember
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