Debt instrument percentage of annual excess cash flow.

No definition available.

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- Definition

Debt instrument reinvestment period.

+ References

No definition available.

+ Details

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- Definition

Debt instrument step downs to percentage of annual excess cash flow under condition one.

+ References

No definition available.

+ Details

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- Definition

Debt instrument step downs to percentage of annual excess cash flow under condition two.

+ References

No definition available.

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- Definition

Debt instrument terms mandatory prepayments percentage of net cash proceeds from asset sales and casualty events.

+ References

No definition available.

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- Definition

Federal funds effective rate plus percentage.

+ References

No definition available.

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- Definition

Long term debt covenants minimum liquidity amount.

+ References

No definition available.

+ Details

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- Definition

Net cash proceeds from sale of ordinary assets.

+ References

No definition available.

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Period Type:	duration

- Definition

Net cash proceeds per sale from sale of ordinary assets.

+ References

No definition available.

+ Details

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

- Definition

Ratio of consolidated debt to consolidated EBITDA under condition one.

+ References

No definition available.

+ Details

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Namespace Prefix:	orbk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Ratio of consolidated debt to consolidated EBITDA under condition two.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

+ Details

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

- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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

- Definition

Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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- Definition

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 rate subject to change from time to time.

+ References

+ Details

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Long-Term Loans - Additional Information (Detail) - Credit Agreement [Member] - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Aug. 07, 2014
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.00%
Percentage of net cash proceeds from asset sales and casualty events		100.00%
Net cash proceeds from certain non-ordinary course assets sales, including casualty and condemnation proceeds		$ 5,000,000
Credit agreement reinvestment period		365 days
Annual excess cash flow, percentage		50.00%
Step-downs to annual excess cash flow percentage, condition 1		25.00%
Step-downs to annual excess cash flow percentage, condition 2		0.00%
Guarantees by Company and Existing Subsidiaries [Member]
Debt Instrument [Line Items]
Minimum liquidity amount		$ 40,000,000
Maximum [Member]
Debt Instrument [Line Items]
Ratio of consolidated debt to trailing four-quarter consolidated EBITDA, condition 1		125.00%
Ratio of consolidated debt to trailing four-quarter consolidated EBITDA, condition 2		75.00%
Minimum [Member]
Debt Instrument [Line Items]
Net cash proceeds per sale from certain non-ordinary course assets sales, including casualty and condemnation proceeds		$ 2,500,000
Base Rate [Member]
Debt Instrument [Line Items]
Floating interest rate		3.00%
LIBO Rate [Member]
Debt Instrument [Line Items]
Floating interest rate		4.00%
LIBO Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Floating interest rate		1.00%
Term Loan [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 297,000,000
Debt instrument discount				$ 3,000,000
Interest rate terms		The Term Loans bear interest at a floating rate equal to, at the Company’s option (a) a base rate determined by reference to the highest of (1) the interest rate announced from time to time by JPMorgan Chase Bank, N.A. as its prime rate, (2) the federal funds effective rate plus 1/2 of 1% and (3) a LIBO rate determined by reference to the costs of funds for Dollar deposits for a one-month interest period adjusted for certain additional costs plus 1% or (b) a LIBO rate determined by reference to the costs of funds for Dollar deposits for the interest period relevant to such borrowing adjusted for certain additional costs, in each case plus an applicable margin. For purpose of determining the interest rate payable on loans under the Term Loans under clauses (a) and (b) of the immediately preceding sentence, the LIBO rate will in no event be less than 1.0%. The applicable interest rate margin will be 3.0% with respect to base rate borrowings and 4.0% with respect to LIBO rate borrowings.
Federal funds effective rate plus percentage		0.50%
Debt instrument, maturity date		Aug. 07, 2020
Nominal interest rate, percentage		5.00%	5.00%
Debt instrument, payment terms		The Company became required to make amortization payments in quarterly installments, commencing on December 31, 2014. The amount of the quarterly installments was equal to $750,000 for the first 12 quarterly amortization payments, $5.625 million for the next 11 quarterly amortization payments, and the balance of the principal amount will be due at final maturity.
Term Loan [Member] \| First 12 Quarterly Amortization Payments [Member]
Debt Instrument [Line Items]
Amount of quarterly amortization payments	$ 750,000	$ 607,000
Term Loan [Member] \| Next 11 Quarterly Amortization Payments [Member]
Debt Instrument [Line Items]
Amount of quarterly amortization payments	$ 5,625,000	$ 4,600,000
Secured Bond [Member] \| Guarantees by Company and Existing Subsidiaries [Member]
Debt Instrument [Line Items]
Secured bond, issuance date		Aug. 07, 2014