Certificate of deposit, maturity date.

Name:	iivi_CertificateOfDepositMaturityDate
Namespace Prefix:	iivi
Data Type:	invest:dateStringItemType
Balance Type:	na
Period Type:	duration

- Definition

Key assumptions in applying the income approach for earnout arrangements.

+ Details

Name:	iivi_KeyAssumptionsInApplyingIncomeApproachForEarnoutArrangements
Namespace Prefix:	iivi
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of probability of achieving the financial targets under the earnout arrangements.

+ Details

Name:	iivi_PercentageOfProbabilityOfAchievingFinancialTargetsUnderEarnoutArrangements
Namespace Prefix:	iivi
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value Of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2011 Certificate Of Deposit [Member]	Sep. 30, 2011 Certificate Of Deposit [Member] Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]	Sep. 30, 2011 Contingent Earnout Arrangements [Member]	Jun. 30, 2011 Contingent Earnout Arrangements [Member]	Sep. 30, 2011 Contingent Earnout Arrangements [Member] Significant Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Contingent Earnout Arrangements [Member] Significant Unobservable Inputs (Level 3) [Member]	Sep. 30, 2011 Foreign Currency Forward Contracts [Member]	Jun. 30, 2011 Foreign Currency Forward Contracts [Member]	Sep. 30, 2011 Foreign Currency Forward Contracts [Member] Significant Other Observable Inputs (Level 2) [Member]	Jun. 30, 2011 Foreign Currency Forward Contracts [Member] Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of financial instruments, assets		$ 565	$ 565
Fair value of financial instruments, liabilities				$ 5,985	$ 5,941	$ 5,985	$ 5,941	$ 141	$ 174	$ 141	$ 174
Key assumptions in applying the income approach for earnout arrangements	0.93%
Percentage of probability of achieving the financial targets under the earnout arrangements	100.00%
Certificate of deposit, maturity date	July of 2012