Represents the contracted capacity of a plant as of the specified date.

No definition available.

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Namespace Prefix:	ora_
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Balance Type:	na
Period Type:	instant

- Definition

Represents the number of semi-annual payments under a debt instrument.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
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- Definition

Represents the principal amount to be repaid in installments before the bullet payment is made at the end of the loan period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ora_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The energy storage capacity of an acquired facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	ora_
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Balance Type:	na
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- Definition

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

+ References

+ Details

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Data Type:	num:perShareItemType
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	credit
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- Definition

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

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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Note 11 - Subsequent Events (Details Textual) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	May 08, 2020 USD ($) $ / shares	Apr. 30, 2020 USD ($) MWh	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Apr. 20, 2020 USD ($)	Apr. 17, 2020 MWh	Apr. 16, 2020 MWh	Apr. 06, 2020 USD ($)
Dividends, Common Stock, Total			$ 5,614	$ 5,579
Subsequent Event [Member]
Dividends, Common Stock, Total	$ 5,600
Common Stock, Dividends, Per Share, Declared (in dollars per share) \| $ / shares	$ 0.11
Dividends Payable, Date of Record	May 21, 2020
Dividends Payable, Date to be Paid	Jun. 02, 2020
Subsequent Event [Member] \| Pomona Battery Storage Facility [Member]
Storage Capacity of Acquired Facility (Megawatt-Hour) \| MWh		20
Payments to Acquire Productive Assets, Total		$ 47,000
Subsequent Event [Member] \| Olkaria Compex [Member]
Capacity of Plant, Contracted Level (Megawatt-Hour) \| MWh						133.9	150
Subsequent Event [Member] \| Additional Series 3 Bonds [Member]
Debt Instrument, Face Amount								$ 50,000
Debt Instrument, Interest Rate, Stated Percentage								4.45%
Subsequent Event [Member] \| Second Addition to Series 3 Bonds [Member]
Debt Instrument, Face Amount					$ 14,500
Debt Instrument, Interest Rate, Stated Percentage					4.45%
Subsequent Event [Member] \| Second Addendum Migdal Loan [Member]
Debt Instrument, Face Amount		$ 50,000
Debt Instrument, Interest Rate, Stated Percentage		5.44%
Debt Instrument, Principal to Be Repaid in Installments		$ 31,500
Debt Instrument, Number of Semi-annual Payments		15
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid		$ 18,500