Period consider for calculation of average stock price performance after awards vesting.

No definition available.

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- Definition

Period consider for calculation of average stock price performance prior awards vesting.

+ References

No definition available.

+ Details

Name:	irix_PeriodConsiderForCalculationOfAverageStockPricePerformancePriorAwardsVesting
Namespace Prefix:	irix_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Period Type:	duration

- Details

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- Details

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Subsequent Events (Details Textual)	12 Months Ended			1 Months Ended
Subsequent Events (Details Textual)	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Jan. 31, 2014	Mar. 31, 2015
Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Number of Shares, Restricted stock awards released	46,759	17,249	15,189
Number of Shares, Restricted stock units cancelled	4,890		75,000
Restricted Stock Units (RSUs) \| Market Performance Award #1
Subsequent Event [Line Items]
Period consider for calculation of average stock price performance prior awards vesting	2 months
Period consider for calculation of average stock price performance after awards vesting	2 months
Restricted Stock Units (RSUs) \| Market Performance Award #2
Subsequent Event [Line Items]
Period consider for calculation of average stock price performance prior awards vesting				2 months
Period consider for calculation of average stock price performance after awards vesting				2 months
Subsequent Event
Subsequent Event [Line Items]
Period consider for calculation of average stock price performance prior awards vesting					2 months
Period consider for calculation of average stock price performance after awards vesting					2 months
Subsequent Event \| Restricted Stock Units (RSUs) \| Market Performance Award #1
Subsequent Event [Line Items]
Number of Shares, Restricted stock awards released					190,000
Number of Shares, Restricted stock units cancelled					30,000
Subsequent Event \| Restricted Stock Units (RSUs) \| Market Performance Award #2
Subsequent Event [Line Items]
Number of Shares, Restricted stock awards released					0
Number of Shares, Restricted stock units cancelled					50,000