Pro-forma Consolidated Results of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Net revenues	$ 734,912	$ 732,474
Net earnings attributable to II-VI Incorporated	$ 47,054	$ 44,693
Basic earnings per share	$ 0.76	$ 0.72
Diluted earnings per share	$ 0.75	$ 0.70

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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