Coherent (COHR) 10-Q 12 May 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Mar. 31, 2014	2-May-14
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'IIVI	'
Entity Registrant Name	'II-VI INC	'
Entity Central Index Key	'0000820318	'
Current Fiscal Year End Date	'--06-30	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	61,939,724

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Current Assets	'	'
Cash and cash equivalents	$185,691	$185,433
Accounts receivable - less allowance for doubtful accounts of $1,147 at March 31, 2014 and $1,479 at June 30, 2013	126,228	107,173
Inventories	174,607	141,859
Deferred income taxes	9,192	10,794
Prepaid and refundable income taxes	4,456	4,543
Prepaid and other current assets	15,535	11,342
Total Current Assets	515,709	461,144
Property, plant & equipment, net	211,733	170,672
Goodwill	198,864	123,352
Other intangible assets, net	141,263	86,701
Investment	11,409	11,203
Deferred income taxes	1,995	2,696
Other assets	9,091	8,034
Total Assets	1,090,064	863,802
Current Liabilities	'	'
Current portion of long-term debt	20,000	'
Accounts payable	47,885	23,617
Accrued compensation and benefits	29,789	28,315
Accrued income taxes payable	2,741	7,697
Deferred income taxes	147	110
Other accrued liabilities	34,527	34,695
Total Current Liabilities	135,089	94,434
Long-term debt	242,907	114,036
Deferred income taxes	10,790	4,095
Other liabilities	36,037	15,129
Total Liabilities	424,823	227,694
Shareholders' Equity	'	'
Preferred stock, no par value; authorized - 5,000,000 shares; none issued	'	'
Common stock, no par value; authorized - 300,000,000 shares; issued - 70,827,878 shares at March 31, 2014; 70,223,286 shares at June 30, 2013	209,970	194,284
Accumulated other comprehensive income	17,850	15,600
Retained earnings	508,672	482,878
Shareholders' equity excluding treasury stock	736,492	692,762
Treasury stock, at cost, 8,896,984 shares at March 31, 2014 and 8,011,733 shares at June 30, 2013	-71,251	-56,654
Total Shareholders' Equity	665,241	636,108
Total Liabilities and Shareholders' Equity	$1,090,064	$863,802

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowance for doubtful accounts	$1,147	$1,479
Preferred stock, par value	$0	$0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$0	$0
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	70,827,878	70,223,286
Treasury stock, shares	8,896,984	8,011,733

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Earnings (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenues	'	'	'	'
Domestic	$54,424	$65,176	$178,683	$168,938
International	119,131	78,764	316,657	228,107
Total Revenues	173,555	143,940	495,340	397,045
Costs, Expenses and Other Expense (Income)	'	'	'	'
Cost of goods sold	118,865	92,986	330,945	248,424
Internal research and development	12,099	5,781	31,201	16,992
Selling, general and administrative	33,848	27,004	101,412	79,534
Interest expense	1,412	449	3,064	708
Other expense (income), net	-1,694	-1,401	-2,766	-6,713
Total Costs, Expenses and Other Expense (Income)	164,530	124,819	463,856	338,945
Earnings from Continuing Operations Before Income Taxes	9,025	19,121	31,484	58,100
Income Taxes	494	2,861	5,823	13,844
Earnings from Continuing Operations	8,531	16,260	25,661	44,256
Earnings (loss) from Discontinued Operation, net of income tax	'	-166	133	-2,563
Net Earnings	8,531	16,094	25,794	41,693
Less: Net Earnings Attributable to Redeemable Noncontrolling Interest	'	225	'	906
Net Earnings Attributable to II-VI Incorporated	$8,531	$15,869	$25,794	$40,787
Earnings (loss) Attributable to II-VI Incorporated: Basic Earnings (loss) Per Share:	'	'	'	'
Continuing Operations	$0.14	$0.26	$0.41	$0.69
Discontinued Operation	'	$0	$0	($0.04)
Consolidated	$0.14	$0.26	$0.41	$0.65
Earnings (loss) Attributable to II-VI Incorporated: Diluted Earnings (loss) Per Share:	'	'	'	'
Continuing Operations	$0.13	$0.25	$0.40	$0.68
Discontinued Operation	'	$0	$0	($0.04)
Consolidated	$0.13	$0.25	$0.40	$0.64

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Net earnings	$8,531	$16,094	$25,794	$41,693
Other comprehensive income:	'	'	'	'
Foreign currency translation adjustments	-2,123	-1,622	2,250	1,500
Comprehensive income	6,408	14,472	28,044	43,193
Net earnings attributable to redeemable noncontrolling interest	'	225	'	906
Other comprehensive income (loss) attributable to redeemable noncontrolling interest:	'	'	'	'
Foreign currency translation adjustment attributable to redeemable noncontrolling interest	'	-138	'	-354
Comprehensive income attributable to redeemable noncontrolling interest	'	87	'	552
Comprehensive income attributable to II-VI Incorporated	$6,408	$14,385	$28,044	$42,641

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities	'	'
Net earnings	$25,794	$41,693
Adjustments to reconcile net earnings to net cash provided by operating activities:	'	'
(Earnings) loss from discontinued operation, net of tax	-133	2,563
Depreciation	31,191	25,331
Amortization	8,234	4,561
Share-based compensation expense	9,732	9,232
Loss on foreign currency remeasurements and transactions	380	672
Earnings from equity investment	-517	-822
Deferred income taxes	-1,814	2,306
Excess tax benefits from share-based compensation expense	-522	-678
Increase (decrease) in cash from changes in:	'	'
Accounts receivable	-17,719	9,306
Inventories	3,886	-7,387
Accounts payable	21,943	-7,697
Income taxes	-7,810	565
Other operating net assets	-5,237	-11,690
Continuing Operations	67,408	67,955
Discontinued Operation	1,197	164
Net cash provided by operating activities	68,605	68,119
Cash Flows from Investing Activities	'	'
Additions to property, plant & equipment	-20,767	-17,430
Purchases of businesses, net of cash acquired	-177,676	-126,165
Proceeds received on contractual settlement from Thailand flood	'	2,436
Other investing activities	226	1,452
Continuing Operations	-198,217	-139,707
Discontinued Operation	'	-68
Net cash used in investing activities	-198,217	-139,775
Cash Flows from Financing Activities	'	'
Proceeds from borrowings	183,000	113,000
Payments on borrowings	-34,000	-4,000
Payment on earnout arrangement	-2,200	'
Payments of redeemable noncontrolling interest	-8,789	-284
Proceeds from exercises of stock options	3,613	3,836
Purchases of treasury stock	-10,957	-19,978
Other financing activities	-1,375	-19
Net cash provided by financing activities	129,292	92,555
Effect of exchange rate changes on cash and cash equivalents	578	-249
Net increase in cash and cash equivalents	258	20,650
Cash and Cash Equivalents at Beginning of Period	185,433	134,944
Cash and Cash Equivalents at End of Period	185,691	155,594
Cash paid for interest	2,883	631
Cash paid for income taxes	12,545	10,040
Non cash transactions:	'	'
Purchase of business - holdback amount recorded in other accrued liabilities	10,000	'
Capital lease obligation incurred on facility lease	11,857	'
Purchase of business utilizing earnout arrangement recorded in other liabilities	'	$3,400

Condensed_Consolidated_Stateme3

Condensed Consolidated Statement of Shareholders' Equity (USD $)	Total	Common Stock	Accumulated Other Comprehensive Income	Retained Earnings	Treasury Stock
In Thousands, except Share data
Beginning Balance at Jun. 30, 2013	$636,108	$194,284	$15,600	$482,878	($56,654)
Beginning Balance, shares at Jun. 30, 2013	'	70,223,000	'	'	-8,012,000
Shares issued under share-based compensation plans (in shares)	'	605,000	'	'	'
Shares issued under share-based compensation plans	3,623	3,623	'	'	'
Minimum tax withholding requirements, (in shares)	'	'	'	'	-42,000
Minimum tax withholding requirements	-799	'	'	'	-799
Share-based compensation expense	9,732	9,732	'	'	'
Net earnings	25,794	'	'	25,794	'
Purchases of treasury stock	-11,989	'	'	'	-11,989
Purchases of treasury stock, shares	'	'	'	'	-750,000
Treasury stock under deferred compensation arrangements	'	1,809	'	'	-1,809
Treasury stock in deferred compensation plan, (in shares)	'	'	'	'	-93,000
Excess tax benefits from share-based compensation expense	522	522	'	'	'
Foreign currency translation adjustments	2,250	'	2,250	'	'
Ending Balance at Mar. 31, 2014	$665,241	$209,970	$17,850	$508,672	($71,251)
Ending Balance, shares at Mar. 31, 2014	'	70,828,000	'	'	-8,897,000

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Mar. 31, 2014
Basis of Presentation	'
	Note  1.	Basis of Presentation
	The condensed consolidated financial statements of II-VI Incorporated (“II-VI” or the “Company”) for the three and nine months ended March 31, 2014 and 2013 are unaudited. In the opinion of management, all adjustments considered necessary for a fair presentation for the periods presented have been included. All adjustments are of a normal recurring nature unless disclosed otherwise. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 30, 2013. The consolidated results of operations for the three and nine months ended March 31, 2014 are not necessarily indicative of the results to be expected for the full fiscal year. The June 30, 2013 Condensed Consolidated Balance Sheet information was derived from the Company’s audited financial statements.
	In conjunction with the acquisitions of Oclaro, Inc.’s (“Oclaro”) fiber amplifier and micro-optics business on November 1, 2013, and, Oclaro’s Switzerland-based semiconductor laser business on September 12, 2013, the Company has established a new reporting segment “Active Optical Products” which reports the operating results of these two recently acquired businesses.

Discontinued_Operation

Discontinued Operation	9 Months Ended
	Mar. 31, 2014
Discontinued Operation	'
	Note  2.	Discontinued Operation
	During December 2013, the Company completed the discontinuance of its tellurium product line by exiting all business activities associated with this product.  This product line was previously serviced by Pacific Rare Specialty Metals & Chemicals, Inc. (“PRM”) and was included as part of the Military & Materials segment.   Prior periods have been restated to present this product line on a discontinued operation basis.   The revenues and earnings (losses) of the tellurium product line have been reflected as a discontinued operation for the periods presented as follows: ($000):
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014		2013
	Revenues	$	-	$	1,230		$	1,849	$	6,306
	Earnings (loss) from discontinued operation before income taxes		-		(166	)	133			(2,563	)
	Income tax benefit (expense)		-		-			-		-
	Earnings (loss) from discontinued operation, net of taxes	$	-	$	(166	)	$	133	$	(2,563	)

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Mar. 31, 2014
Recent Accounting Pronouncements	'
	Note  3.	Recent Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board (the "FASB") issued an Accounting Standards Update ("ASU") that changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. Under the new guidance, a discontinued operation is defined as a disposal of a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has or will have a major effect on an entity's operations and financial results. The new standard will be effective for annual periods beginning on or after December 15, 2014 with early adoption permitted and will be effective for the Company beginning in the first quarter of fiscal year 2016. The adoption of this standard is not expected to have a significant impact on the Company’s consolidated financial statements.
	In July 2013, the FASB issued an ASU that changes how certain unrecognized tax benefits are to be presented on the consolidated balance sheet. This ASU clarified existing guidance to require that an unrecognized tax benefit or a portion thereof be presented in the consolidated balance sheet as a reduction to a deferred tax asset for a net operating loss ("NOL") carryforward, similar tax loss, or a tax credit carryforward except when an NOL carryforward, similar tax loss, or tax credit carryforward is not available under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position. In such a case, the unrecognized tax benefit would be presented in the consolidated balance sheet as a liability. This update is effective prospectively for fiscal years beginning after December 15, 2013 and will be effective for the Company beginning in the first quarter of fiscal year 2015. The adoption of this standard is not expected to have a significant impact on the Company’s consolidated financial statements.
	In March 2013, the FASB issued an ASU related to a parent’s accounting for the cumulative translation adjustment upon de-recognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. The update clarifies the applicable guidance under current U.S. GAAP for the release of the cumulative translation adjustment upon a reporting entity’s de-recognition of a subsidiary or group of assets within a foreign entity or part or all of its investment in a foreign entity. The update requires a reporting entity, which either sells a part or all of its investment in a foreign entity or ceases to have a controlling financial interest in a subsidiary or group of assets within a foreign entity, to release any related cumulative translation adjustment into net income. This update is effective prospectively for fiscal years beginning after December 15, 2013 and will be effective for the Company beginning in the first quarter of fiscal year 2015. The adoption of this standard is not expected to have a significant impact on the Company’s consolidated financial statements.
	In February 2013, the FASB issued an ASU related to disclosure requirements of reclassifications out of accumulated other comprehensive income. The adoption of the guidance requires the Company to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, the Company is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified from each component of accumulated other comprehensive income and the income statement line items affected by the reclassification. This update was effective for the Company beginning in the first quarter of fiscal year 2014 and did not have a significant impact on the Company’s consolidated financial statements.

Acquisitions

Acquisitions	9 Months Ended
	Mar. 31, 2014
Acquisitions	'
	Note  4.	Acquisitions
	Oclaro’s Fiber Amplifier and Micro-Optics Business
	In November 2013, the Company acquired certain assets of Oclaro used in the fiber amplifier and micro-optics business. The Company operates the business under the name Network Solutions and includes it with II-VI Laser Enterprise, GmbH (“Laser Enterprise”) in the Company’s new operating segment, Active Optical Products. Network Solutions is a manufacturer of fiber amplifiers and micro-optics used in the optical communications market. At closing, the Company paid $79.6 million in cash, plus a $4.0 million holdback amount for 14 months to address any post-closing adjustments or claims, and $5.0 million that was previously paid to Oclaro on September 12, 2013. The purchase price of the Network Solutions acquisition is summarized as follows ($000):
	Net cash paid at acquisition date	$	79,600
	Cash previously paid		5,000
	Holdback amount recorded in Other liabilities		4,000
	Purchase price	$	88,600
	Due to the timing of the acquisition, the Company is still in the process of completing its fair market valuation, including the valuation of certain tangible and intangible assets as well as deferred income taxes. The following table presents the preliminary allocation of the purchase price of the assets acquired at the date of acquisition, as the Company intends to finalize its accounting for the acquisition of Network Solutions during fiscal year 2014 ($000):
	Assets
	Inventories	$	11,314
	Property, plant & equipment		9,700
	Intangible assets		32,900
	Goodwill		34,686
	Total assets acquired	$	88,600
	The goodwill of $34.7 million is included in the Active Optical Products segment and is attributed to the expected synergies and the assembled workforce of Network Solutions. All of the goodwill is deductible for income tax purposes.
	The amount of revenues and net loss from operations of Network Solutions included in the Company’s Condensed Consolidated Statement of Earnings were $19.4 million and $0.5 million, respectively, for the three months ended March 31, 2014 and were $32.6 million and $2.3 million, respectively, for the nine months ended March 31, 2014.
	Oclaro’s Switzerland-Based Semiconductor Laser Business
	In September 2013, the Company acquired all of the outstanding shares of Oclaro Switzerland GmbH, a limited liability company formed under the laws of the Swiss confederation, as well as certain additional assets of Oclaro used in the semiconductor laser business. The Company operates the acquired business under the name Laser Enterprise and includes it in the Company’s new operating segment, Active Optical Products. Laser Enterprise is a manufacturer of high-power semiconductor laser components enabling fiber and direct diode laser systems for material processing, medical, consumer and printing applications. In addition, the segment manufactures pump lasers for optical amplifiers for both terrestrial and submarine applications and vertical cavity surface emitting lasers (VCSELS) for optical navigation, optical interconnects and optical sensing applications.  At closing, the Company paid $90.6 million of cash, net of cash acquired of $1.7 million, a $6.0 million holdback amount by the Company for 15 months to address any post-closing adjustments or claims, and a $2.0 million holdback amount for potential post-closing working capital adjustments.  During the three months ended March 2014, the Company paid an additional $2.5 million for a working capital adjustment in accordance with the purchase agreement. The purchase price of the Laser Enterprise acquisition is summarized as follows ($000):
	Net cash paid at acquisition date	$	90,601
	Additional cash paid for working capital adjustment		2,475
	Holdback amount recorded in Other accrued liabilities		6,000
	Purchase price	$	99,076
	Due to the timing of the acquisition, the Company is still in the process of completing its fair market valuation, including the valuation of certain tangible and intangible assets as well as deferred income taxes. The following table presents the preliminary allocation of the purchase price of the assets acquired and liabilities assumed at the date of acquisition, as the Company intends to finalize its accounting for the acquisition of Laser Enterprise during fiscal year 2014 ($000):
	Assets
	Inventories	$	26,071
	Prepaid and other assets		1,035
	Deferred income taxes		2,376
	Property, plant & equipment		30,200
	Intangible assets		29,800
	Goodwill		41,105
	Total assets acquired	$	130,587
	Liabilities
	Accounts payable	$	2,214
	Deferred income taxes		13,290
	Accrued income taxes		2,714
	Other accrued liabilities		13,293
	Total liabilities assumed	$	31,511
	Net assets acquired	$	99,076
	The goodwill of Laser Enterprise of $41.1 million is included in the Active Optical Products segment and is attributed to the expected synergies and the assembled workforce of Laser Enterprise. None of the goodwill is deductible for income tax purposes.
	The amount of revenues and net loss from operations of Laser Enterprise included in the Company’s Condensed Consolidated Statement of Earnings for the three months ended March 31, 2014 was $18.1 million and $5.0 million, respectively, and was $43.1 million and $12.3 million, respectively, for the nine months ended March 31, 2014.
	In conjunction with the acquisitions of Network Solutions and Laser Enterprise, the Company expensed transactions costs of approximately $3.7 million, net of tax of $0.2 million, during the nine months ended March 31, 2014.  None of these costs were recorded during the three months ended March 31, 2014.  These costs were recorded within selling, general and administrative expenses in the Condensed Consolidated Statements of Earnings.
	Pro Forma Information
	The following unaudited pro forma consolidated results of operations for the three and nine months ended March 31, 2014 and 2013 have been prepared as if the acquisitions of Network Solutions and Laser Enterprise had occurred on July 1, 2012, the beginning of the Company’s fiscal year 2013, which is the fiscal year prior to the acquisitions. As a result, certain transaction related expenses of $3.7 million (net of tax) for the nine month period were only included in the earliest period presented below ($000 except per share data).
		Three Months Ended				Nine Months Ended
		March 31,				March 31,
		2014		2013		2014		2013
	Net revenues	$	173,555	$	189,471	$	546,991	$	489,527
	Earnings from continuing operations attributable to II-VI Incorporated		8,531		14,166		34,377		31,095
	Basic earnings per share from continuing operations attributable to II-VI Incorporated		0.14		0.23		0.55		0.5
	Diluted earnings per share from continuing operations attributable to II-VI Incorporated		0.13		0.22		0.54		0.49
	The pro forma results are not necessarily indicative of what actually would have occurred if the transactions had occurred as described above, are not intended to be a projection of future results and do not reflect any cost savings that might be achieved from the combined operations.

Investment

Investment	9 Months Ended
	Mar. 31, 2014
Investment	'
	Note  5.	Investment
	The Company has an equity investment in Guangdong Fuxin Electronic Technology (“Fuxin”) based in Guangdong Province, China of 20.2%, which is accounted for under the equity method of accounting. The total carrying value of the investment recorded at March 31, 2014 and June 30, 2013 was $11.4 million and $11.2 million, respectively. During the three months ended March 31, 2014 and 2013, the Company’s pro-rata share of earnings from this investment was $0.1 million and $0.2 million, respectively, and was $0.5 million and $0.8 million during the nine months ended March 31, 2014 and 2013, respectively, and were recorded in Other expense (income), net in the Condensed Consolidated Statements of Earnings.

Inventories

Inventories	9 Months Ended
	Mar. 31, 2014
Inventories	'
	Note  6.	Inventories
	The components of inventories were as follows ($000):
		March 31,		June 30,
		2014		2013
	Raw materials	$	76,254	$	59,290
	Work in progress		57,344		43,895
	Finished goods		41,009		38,674
		$	174,607	$	141,859

Property_Plant_and_Equipment

Property, Plant and Equipment	9 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment	'
	Note  7.	Property, Plant and Equipment
	Property, plant and equipment consists of the following ($000):
		March 31,			June 30,
		2014			2013
	Land and land improvements	$	2,381		$	2,236
	Buildings and improvements		96,404			87,189
	Machinery and equipment		331,181			276,802
	Construction in progress		14,579			10,831
			444,545			377,058
	Less accumulated depreciation		(232,812	)		(206,386	)
		$	211,733		$	170,672

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	9 Months Ended
	Mar. 31, 2014
Goodwill and Other Intangible Assets	'
	Note  8.	Goodwill and Other Intangible Assets
	Changes in the carrying amount of goodwill are as follows ($000):
		Nine Months Ended March 31, 2014
						Near-			Military		Advanced			Active
		Infrared				Infrared			&		Products			Optical
		Optics				Optics			Materials		Group			Products			Total
	Balance-beginning of period	$	9,677			$	60,269		$	30,712	$	22,694		$	-		$	123,352
	Goodwill acquired		-				-			-		-			75,791			75,791
	Goodwill adjustment		-				-			-		(516	)		-			(516	)
	Foreign currency translation		94				143			-		-			-			237
	Balance-end of period	$	9,771			$	60,412		$	30,712	$	22,178		$	75,791		$	198,864
	The Company reviews the recoverability of goodwill at least annually and any time business conditions indicate a potential change in recoverability. The measurement of a potential impairment begins with comparing the current fair value of the Company’s reporting units to the recorded value (including goodwill). The Company uses a discounted cash flow model (“DCF model”) and a market analysis to determine the current fair value of its reporting units. A number of significant assumptions and estimates are involved in estimating the forecasted cash flows used in the DCF model, including markets and market shares, sales volume and pricing, costs to produce, working capital changes and income tax rates. Management considers historical experience and all available information at the time the fair values of the reporting units are estimated. However, actual fair values that could be realized could differ from those used to evaluate the impairment of goodwill.
	In connection with the acquisitions of Laser Enterprise in September 2013 and Network Solutions in November 2013, the Company recorded the excess purchase price over the net assets of the businesses acquired as goodwill in the accompanying Condensed Consolidated Balance Sheet, based on preliminary purchase price allocations.
	During the nine months ended March 31, 2014, the Company recorded an adjustment to goodwill of $0.5 million associated with the November 2012 acquisition of M Cubed Technologies, Inc (“M Cubed”). This adjustment related to a change in deferred income tax assets and was recorded in conjunction with the finalization and filing of the M Cubed final income tax return.
	The gross carrying amount and accumulated amortization of the Company’s intangible assets other than goodwill as of March 31, 2014 and June 30, 2013 was as follows ($000):
		31-Mar-14									30-Jun-13
		Gross							Net		Gross						Net
		Carrying				Accumulated			Book		Carrying			Accumulated			Book
		Amount				Amortization			Value		Amount			Amortization			Value
	Technology and Patents	$	50,506			$	(13,393	)	$	37,113	$	39,659		$	(10,455	)	$	29,204
	Trademarks		17,870				(1,018	)		16,852		17,855			(963	)		16,892
	Customer Lists		104,661				(17,521	)		87,140		52,614			(12,189	)		40,425
	Other		1,588				(1,430	)		158		1,580			(1,400	)		180
	Total	$	174,625			$	(33,362	)	$	141,263	$	111,708		$	(25,007	)	$	86,701
	In conjunction with the acquisitions of Laser Enterprise and Network Solutions, the Company recorded $10.8 million of technology and patents and $51.9 million of customer lists. These intangible assets were recorded based on the Company’s preliminary purchase price allocations which are expected to be finalized during fiscal year 2014.
	Amortization expense recorded on the Company’s intangible assets was $2.6 million and $8.2 million, respectively, for the three and nine months ended March 31, 2014 and was $2.2 million and $4.6 million, respectively, for the three and nine months ended March 31, 2013. The technology and patents are being amortized over a range of 120 to 240 months with a weighted average remaining life of approximately 120 months. The customer lists are being amortized over a range of approximately 120 months to 192 months with a weighted average remaining life of approximately 153 months. The gross carrying amount of trademarks includes $16.4 million of acquired trade names with indefinite lives that are not amortized but tested annually for impairment or more frequently if a triggering event occurs. Included in the gross carrying amount and accumulated amortization of the Company’s intangible assets is the effect of foreign currency translation on that portion of the intangible assets relating to the Company’s German subsidiaries as well as Photop Technologies, Inc. (“Photop”) and Photop AOFR Pty. Ltd. (“Photop AOFR”).
	At March 31, 2014, the estimated amortization expense for existing intangible assets for each of the five succeeding fiscal years is as follows ($000):
	Year Ending June 30,
	Remaining 2014			$	3,096
	2015				11,806
	2016				11,739
	2017				11,729
	2018				11,254

Debt

Debt	9 Months Ended
	Mar. 31, 2014
Debt	'
	Note  9.	Debt
	The components of debt for the periods indicated were as follows ($000):
		March 31,			June 30,
		2014			2013
	Line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively	$	170,000		$	111,000
	Term loan, interest at LIBOR, as defined, plus 1.25%		90,000			-
	Yen denominated line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively		2,907			3,036
	Total debt		262,907			114,036
	Current portion of long-term debt		(20,000	)		-
	Long-term debt, less current portion	$	242,907		$	114,036
	In September 2013, the Company amended and restated its existing credit agreement. The Second Amended and Restated Credit Agreement (the “Amended Credit Facility”) provides for a revolving credit facility of $225 million (increased from $140 million), as well as a $100 million Term Loan. The Term Loan shall be re-paid in consecutive quarterly principal payments on the first business day of each January, April, July and October, with the first payment commencing on October 1, 2013, as follows: (i) twenty consecutive quarterly installments of $5 million and (ii) a final installment of all remaining principal due and payable on the maturity date. The Amended Credit Facility is unsecured, but is guaranteed by each existing and subsequently acquired or organized wholly-owned domestic subsidiary of the Company. The Company has the option to request an increase to the size of the Amended Credit Facility in an aggregate additional amount not to exceed $100 million. The Amended Credit Facility has a five-year term through September 2018 and has an interest rate of LIBOR, as defined in the agreement, plus 0.75% to 1.75% based on the Company’s ratio of consolidated indebtedness to consolidated EBITDA. Additionally, the facility is subject to certain covenants, including those relating to minimum interest coverage and maximum leverage ratios. As of March 31, 2014, the Company was in compliance with all financial covenants under its Amended Credit Facility.
	In conjunction with entering into the Amended Credit Facility, the Company incurred approximately $1.0 million of deferred financing costs which are being amortized over the term of the agreement. As a result of the overall increase in borrowing capacity, existing deferred financing costs at the time of the amendment of $0.5 million are also being amortized over the term of the Amended Credit Facility.
	The Company’s Yen denominated line of credit is a 500 million Yen facility that has a five-year term through June 2016 and has an interest rate equal to LIBOR, as defined in the loan agreement, plus 0.625% to 1.50%. At March 31, 2014 and June 30, 2013, the Company had 300 million Yen borrowed. Additionally, the facility is subject to certain covenants, including those relating to minimum interest coverage and maximum leverage ratios. As of March 31, 2014, the Company was in compliance with all financial covenants under its Yen facility.
	The Company had aggregate availability of $55.4 million and $29.8 million under its lines of credit as of March 31, 2014 and June 30, 2013, respectively. The amounts available under the Company’s lines of credit are reduced by outstanding letters of credit. As of March 31, 2014 and June 30, 2013, total outstanding letters of credit supported by the credit facilities were $1.5 million and $1.3 million, respectively.
	The weighted average interest rate of total borrowings was 1.7% and 1.2% for the nine months ended March 31, 2014 and 2013, respectively.
	Remaining annual principal payments under the Company’s existing credit facilities as of March 31, 2014 were as follows:
								U.S.
								Dollar
			Term			Yen Line		Line of
	Period		Loan			of Credit		Credit		Total
	Year 1		$	20,000		$	-	$	-	$	20,000
	Year 2			20,000			-		-		20,000
	Year 3			20,000			2,907		-		22,907
	Year 4			20,000			-		-		20,000
	Year 5			10,000			-		170,000		180,000
	Total		$	90,000		$	2,907	$	170,000	$	262,907

Income_Taxes

Income Taxes	9 Months Ended
	Mar. 31, 2014
Income Taxes	'
	Note  10.	Income Taxes
	The Company’s year-to-date effective income tax rate from continuing operations at March 31, 2014 and 2013 was 18.5% and 23.8%, respectively. The variations between the Company’s effective tax rate from continuing operations and the U.S. statutory rate of 35.0% were primarily due to the consolidation of the Company’s foreign operations, which are subject to income taxes at lower statutory rates. In addition, the Company recorded $1.4 million of tax benefits during the three months ended March 31, 2014, as a result of statute of limitation expirations on previously filed income tax returns and higher income tax credits from qualifying research and development investment. A change in the mix of pre-tax income from these various tax jurisdictions could have a material impact on the Company’s effective tax rate.
	U.S. GAAP clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements and prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. As of March 31, 2014 and June 30, 2013, the Company’s gross unrecognized income tax benefit was $3.0 million and $3.3 million, respectively. The Company has classified the uncertain tax positions as noncurrent income tax liabilities, as the amounts are not expected to be paid within one year. If recognized, substantially all of the gross unrecognized tax benefits at March 31, 2014 would impact the effective tax rate. The Company recognizes interest and penalties related to uncertain tax positions in the income tax provision on the Condensed Consolidated Statements of Earnings. The amount of accrued interest and penalties included in the $3.0 million and $3.3 million of gross unrecognized income tax benefit at March 31, 2014 and June 30, 2013 was immaterial. Fiscal years 2011 to 2013 remain open to examination by the United States Internal Revenue Service, fiscal years 2008 to 2013 remain open to examination by certain state jurisdictions, and fiscal years 2005 to 2013 remain open to examination by certain foreign taxing jurisdictions.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Mar. 31, 2014
Earnings Per Share	'
	Note  11.	Earnings Per Share
	The following table sets forth the computation of earnings per share attributable to II-VI Incorporated for the periods indicated. Weighted average shares issuable upon the exercises of stock options and the release of performance and restricted shares that were not included in the calculation were approximately 542,000 and 433,000, respectively, for the three and nine months ended March 31, 2014, and 410,000 and 429,000, respectively, for the three and nine months ended March 31, 2013, because they were anti-dilutive ($000 except per share data):
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014		2013
	Earnings from continuing operations attributable to II-VI Incorporated	$	8,531	$	16,035		$	25,661	$	43,350
	Earnings (loss) from discontinued operation		-		(166	)		133		(2,563	)
	Net earnings attributable to II-VI Incorporated	$	8,531	$	15,869		$	25,794	$	40,787
	Divided by:
	Weighted average shares		62,355		62,130			62,426		62,482
	Basic earnings (loss) attributable to II-VI Incorporated per common share:
	Continuing operations	$	0.14	$	0.26		$	0.41	$	0.69
	Discontinued operation	$	-	$	(0.00	)	$	-	$	(0.04	)
	Consolidated	$	0.14	$	0.26		$	0.41	$	0.65
	Earnings from continuing operations attributable to II-VI Incorporated	$	8,531	$	16,035		$	25,661	$	43,350
	Earnings (loss) from discontinued operation		-		(166	)		133		(2,563	)
	Net earnings attributable to II-VI Incorporated	$	8,531	$	15,869		$	25,794	$	40,787
	Divided by:
	Weighted average shares		62,355		62,130			62,426		62,482
	Dilutive effect of common stock equivalents		1,391		1,594			1,444		1,483
	Diluted weighted average common shares		63,746		63,724			63,870		63,965
	Diluted earnings (loss) attributable to II-VI Incorporated per common share:
	Continuing operations	$	0.13	$	0.25		$	0.4	$	0.68
	Discontinued operation	$	-	$	(0.00	)	$	-	$	(0.04	)
	Consolidated	$	0.13	$	0.25		$	0.4	$	0.64

Segment_Reporting

Segment Reporting	9 Months Ended
	Mar. 31, 2014
Segment Reporting	'
	Note  12.	Segment Reporting
	The Company reports its business segments using the “management approach” model for segment reporting. The Company determines its reportable business segments based on the way the chief operating decision maker organizes business segments within the Company for making operating decisions and assessing performance.
	In conjunction with the acquisitions of Laser Enterprise on September 12, 2013 and Network Solutions on November 1, 2013, the Company has established a new reporting segment “Active Optical Products” which reports the operating results of the Company’s recently acquired businesses.
	The Company has five reportable segments as of March 31, 2014. The Company’s chief operating decision maker receives and reviews financial information in this format. The Company evaluates business segment performance based upon reported business segment earnings, which is defined as earnings from continuing operations before income taxes, interest and other income or expense. The segments are managed separately due to the production requirements and facilities unique to each segment. The Company has the following reportable segments at March 31, 2014: (i) Infrared Optics, which consists of the Company’s infrared optics and material products businesses, HIGHYAG Lasertechnologies, GmbH (“HIGHYAG”) and certain remaining corporate activities, primarily corporate assets and capital expenditures; (ii) Near-Infrared Optics, which consists of Photop, Photop Aegis, Inc. (“Photop Aeigs”) and Photop AOFR; (iii) Military & Materials, which consists of the Company’s LightWorks Optical Systems (formerly the Company’s EEO and LightWorks Optical Systems subsidiaries, “LWOS”), VLOC Incorporated (“VLOC”), Max Levy Autograph, Inc. (“MLA”) and PRM; (iv) Advanced Products Group, which is comprised of the Company’s Marlow Industries, Inc. (“Marlow”), M Cubed, the Wide Bandgap Materials Group (“WBG”) and the Worldwide Materials Group (“WMG”), which is responsible for corporate research and development activities; and (v) Active Optical Products which consists of Laser Enterprise and Network Solutions.
	During December 2013, the Company completed the discontinuance of its tellurium product line by exiting all business activities associated with this product.    This product line was previously serviced by PRM and was included as part of the Military & Materials segment.   Segment information for all periods presented has been adjusted to properly reflect the tellurium product as a discontinued operation.
	The Infrared Optics segment is divided into geographic locations in the U.S., Singapore, China, Germany, Switzerland, Japan, Belgium, the U.K. and Italy. The Infrared Optics segment is directed by a general manager, while each geographic location is also directed by a general manager, and is further divided into production and administrative units that are directed by managers. The Infrared Optics segment designs, manufactures and markets optical and electro-optical components and materials sold under the II-VI brand name and used primarily in high-power CO2 lasers. The Infrared Optics segment also manufactures fiber-delivered beam delivery systems and processing tools for industrial lasers sold under the HIGHYAG brand name.
	The Near-Infrared Optics segment is located in the U.S., China, Vietnam, Australia, Germany, Japan, the U.K., Italy and Hong Kong. The Near-Infrared Optics segment is directed by the Corporate Chief Operating Officer and is further divided into production and administrative units that are directed by managers. The Near-Infrared Optics segment manufactures crystal materials, optics, microchip lasers and opto-electronic modules for use in optical communication networks and other diverse consumer and commercial applications sold under the Photop brand name and manufactures tunable optical devices and couplers and combiners required for high speed optical networks sold under the Photop Aegis and Photop AOFR brand names, respectively.
	The Military & Materials segment is located in the U.S. and the Philippines. The Military & Materials segment is directed by the Corporate Chief Operating Officer, while each geographic location is directed by a general manager. The Military & Materials segment is further divided into production and administrative units that are directed by managers. The Military & Materials segment designs, manufactures and markets ultra-violet to infrared optical components and high-precision optical assemblies for military, medical and commercial laser and imaging applications under the LWOS and VLOC brand names and manufactures and markets micro-fine conductive mesh patterns for optical, mechanical, and ceramic components for applications under the MLA brand name. The segment also refines selenium metals for internal consumption and a rare earth element under the PRM brand name.
	The Advanced Products Group is located in the U.S., Vietnam, Japan, China and Germany and is directed by the Corporate Chief Operating Officer. In the Advanced Products Group segment, Marlow designs and manufactures thermoelectric cooling and power generation solutions for use in defense and space, optical communications, medical, consumer and industrial markets. M Cubed develops advanced ceramic materials and precision motion control products addressing the semiconductor, display, industrial and defense markets. WBG manufactures and markets single crystal silicon carbide substrates for use in solid-state lighting, wireless infrastructure, radio frequency (“RF”) electronics and power switching industries. WMG directs the corporate research and development initiatives.
	The Active Optical Products segment is located in Switzerland, China, the U.S., Italy, Japan, Thailand, Hong Kong and the U.K. The Active Optical Products segment is directed by the Corporate Chief Operating Officer. Laser Enterprise manufactures high-power semiconductor laser components enabling fiber and direct diode laser systems for material processing, medical, consumer and printing applications. In addition, Laser Enterprise manufactures pump lasers for optical amplifiers for both terrestrial and submarine applications and VCSELS for optical navigation, optical interconnects and optical sensing applications. Network Solutions manufactures optical amplifiers and micro-optics for both terrestrial and submarine applications within the optical communications market.
	The accounting policies of the segments are the same as those of the Company. All of the Company’s corporate expenses are allocated to the segments. The Company evaluates segment performance based upon reported segment earnings, which is defined as earnings from continuing operations before income taxes, interest and other income or expense. Inter-segment sales and transfers have been eliminated.
	The following tables summarize selected financial information of the Company’s operations by segment ($000):
		Three Months Ended March 31, 2014
				Near-			Military			Advanced		Active
		Infrared		Infrared			&			Products		Optical
		Optics		Optics			Materials			Group		Products			Eliminations			Total
	Revenues	$	50,259	$	33,554		$	22,228		$	29,961	$	37,553		$	-		$	173,555
	Inter-segment revenues		306		812			1,941			1,490		-			(4,549	)		-
	Segment earnings (loss)		10,008		2,107			1,342			3,197		(7,911	)		-			8,743
	Interest expense		-		-			-			-		-			-			(1,412	)
	Other income, net		-		-			-			-		-			-			1,694
	Income taxes		-		-			-			-		-			-			(494	)
	Earnings from discontinued operation		-		-			-			-		-			-			-
	Net earnings		-		-			-			-		-			-			8,531
	Depreciation and amortization		2,281		4,026			1,940			2,462		2,483			-			13,192
	Segment assets		232,658		303,284			119,438			178,543		256,141			-			1,090,064
	Expenditures for property, plant and equipment		2,352		954			1,265			1,336		571			-			6,478
	Investment		-		-			-			11,409		-			-			11,409
	Goodwill		9,771		60,412			30,712			22,178		75,791			-			198,864
		Three Months Ended March 31, 2013
				Near-			Military			Advanced
		Infrared		Infrared			&			Products
		Optics		Optics			Materials			Group		Eliminations			Total
	Revenues	$	52,886	$	35,821		$	27,639		$	27,594	$	-		$	143,940
	Inter-segment revenues		730		(289	)		695			1,303		(2,439	)		-
	Segment earnings (loss)		13,969		3,774			(384	)		810		-			18,169
	Interest expense		-		-			-			-		-			(449	)
	Other income, net		-		-			-			-		-			1,401
	Income taxes		-		-			-			-		-			(2,861	)
	Loss from discontinued operation		-		-			-			-		-			(166	)
	Net earnings		-		-			-			-		-			16,094
	Depreciation and amortization		2,032		4,228			1,984			2,481		-			10,725
	Expenditures for property, plant and equipment		823		1,981			455			1,027		-			4,286
		Nine Months Ended March 31, 2014
				Near-			Military			Advanced		Active
		Infrared		Infrared			&			Products		Optical
		Optics		Optics			Materials			Group		Products			Eliminations			Total
	Revenues	$	152,066	$	109,298		$	72,982		$	85,273	$	75,721					$	495,340
	Inter-segment revenues		769		1,580			5,251			4,848		-			(12,448	)		-
	Segment earnings (loss)		28,699		7,726			8,219			6,031		(18,893	)		-			31,782
	Interest expense		-		-			-			-		-			-			(3,064	)
	Other income, net		-		-			-			-		-			-			2,766
	Income taxes		-		-			-			-		-			-			(5,823	)
	Earnings from discontinued operation		-		-			-			-		-			-			133
	Net earnings		-		-			-			-		-			-			25,794
	Depreciation and amortization		6,627		12,774			6,105			7,461		6,458			-			39,425
	Expenditures for property, plant and equipment		7,264		6,396			3,004			2,886		1,217			-			20,767
		Nine Months Ended March 31, 2013
				Near-			Military			Advanced
		Infrared		Infrared			&			Products
		Optics		Optics			Materials			Group		Eliminations			Total
	Revenues	$	149,852	$	113,463		$	67,858		$	65,872	$	-		$	397,045
	Inter-segment revenues		1,881		679			3,033			3,863		(9,456	)		-
Segment earnings (loss)		36,343		16,637			(1,210	)		325		-			52,095
Interest expense		-		-			-			-		-			(708	)
Other income, net		-		-			-			-		-			6,713
Income taxes		-		-			-			-		-			(13,844	)
Loss from discontinued operation		-		-			-			-		-			(2,563	)
Net earnings		-		-			-			-		-			41,693
Depreciation and amortization		6,264		12,900			4,991			5,737		-			29,892
Expenditures for property, plant and equipment		3,411		6,184			2,428			5,407		-			17,430

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Mar. 31, 2014
Share-Based Compensation	'
	Note 13.	Share-Based Compensation
	The Board of Directors adopted the II-VI Incorporated 2012 Omnibus Incentive Plan (the “Plan”) which was approved by the shareholders of the Company. The Plan provides for the grant of non-qualified stock options, stock appreciation rights, restricted share awards, restricted share units, deferred share awards, performance share awards and performance share units to employees, officers and directors of the Company. The Company records share-based compensation expense for these awards in accordance with U.S. GAAP, which requires the recognition of the fair value of share-based compensation in net earnings. The Company recognizes the share-based compensation expense over the requisite service period of the individual grantees, which generally equals the vesting period.  The Company accounts for cash-based stock appreciation rights, cash-based restricted share units awards and cash-based performance share unit awards as liability awards, in accordance with applicable accounting standards.
	Share-based compensation expense is allocated approximately 20% to cost of goods sold and 80% to selling, general and administrative expense based on the employee classification of the grantees. Share-based compensation expense for the periods indicated was as follows ($000):
		Three Months Ended			Three Months Ended			Nine Months Ended			Nine Months Ended
		31-Mar-14			31-Mar-13			31-Mar-14			31-Mar-13
	Stock Options and Cash-Based Stock Appreciation Rights	$	1,190		$	1,152		$	4,566		$	3,916
	Restricted Share Awards and Cash-Based Restricted Share Unit Awards		930			1,144			3,539			3,240
	Performance Share Awards and Cash-Based Performance Share Unit Awards		785			555			2,485			2,582
		$	2,905		$	2,851		$	10,590		$	9,738
	Stock Options and Stock Appreciation Rights:
	The Company utilizes the Black-Scholes valuation model for estimating the fair value of these awards. The weighted-average fair value of awards granted under the Plan were $6.63 and $8.57 per award, respectively, during the three and nine months ended March 31, 2014 and were $7.84 and $8.44 per award, respectively, during the three and nine months ended March 31, 2013, using the following assumptions:
		Three Months Ended			Three Months Ended			Nine Months Ended			Nine Months Ended
		31-Mar-14			31-Mar-13			31-Mar-14			31-Mar-13
	Risk-free interest rate		1.82	%		1.1	%		1.75	%		0.94	%
	Expected volatility		46	%		48	%		47	%		49	%
	Expected life of options	5.5 years			4.7 years			5.7 years			5.7 years
	Dividend yield	None			None			None			None
	The risk-free interest rate is derived from the average U.S. Treasury Note rate during the period, which approximates the rate in effect at the time of grant related to the expected life of the awards. The risk-free interest rate shown above is the weighted average rate for all awards granted during each respective period. Expected volatility is based on the historical volatility of the Company’s Common Stock over the period commensurate with the expected life of the awards. The expected life calculation is based on the observed time to post-vesting exercise and/or forfeitures of awards by our employees. The dividend yield of zero is based on the fact that the Company has never paid cash dividends and has no current intention to pay cash dividends in the future. The estimated annualized forfeitures are based on the Company’s historical experience of award cancellations pre-vesting and are estimated at a rate of 16%. The Company will record additional expense in future periods if the actual forfeiture rate is lower than estimated, and will adjust expense in future periods if the actual forfeitures are higher than estimated.
	Restricted Share Awards and Restricted Share Units:
	The restricted share awards and units compensation expense was calculated based on the number of shares or units expected to be earned by the grantees multiplied by the stock price at the date of grant and is being recognized over the vesting period. Generally, the restricted share awards and units have a three year cliff-vesting provision and an estimated forfeiture rate of 7.5%.
	Performance Share Awards and Performance Share Units:
	The Compensation Committee of the Board of Directors of the Company has granted certain named executive officers and employees performance share awards and units under the Plan. As of March 31, 2014, the Company had outstanding grants covering performance periods ranging from 24 to 48 months. These awards are intended to provide continuing emphasis on specified financial performance goals that the Company considers important contributors to long-term shareholder value. These awards are payable only if the Company achieves specified levels of financial performance during the performance periods. The performance share awards and units compensation expense is calculated based on the estimated number of shares or units expected to be earned multiplied by the stock price at the date of grant.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	9 Months Ended
	Mar. 31, 2014
Fair Value of Financial Instruments	'
	Note  14.	Fair Value of Financial Instruments
	The FASB defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous markets for the asset and liability in an orderly transaction between market participants at the measurement date. The Company estimates fair value of its financial instruments utilizing an established three-level hierarchy in accordance with U.S. GAAP. The hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date as follows:
	•	Level 1 –	Valuation is based upon unadjusted quoted prices for identical assets or liabilities in active markets.
	•	Level 2 –	Valuation is based upon quoted prices for similar assets and liabilities in active markets, or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instruments.
	•	Level 3 –	Valuation is based upon other unobservable inputs that are significant to the fair value measurements.
	The classification of fair value measurements within the hierarchy is based upon the lowest level of input that is significant to the measurement. At March 31, 2014, the Company had foreign currency forward contracts recorded at fair value. The fair values of these instruments were measured using valuations based upon quoted prices for similar assets and liabilities in active markets (Level 2) and are valued by reference to similar financial instruments, adjusted for credit risk and restrictions and other terms specific to the contracts. At March 31, 2014, the Company had a contingent earnout arrangement related to the acquisition of LightWorks recorded at fair value. The LightWorks earnout arrangement provided up to a maximum of $4.2 million of additional cash payments to the former shareholders based upon LightWorks achieving certain agreed upon financial targets for revenues and customer orders in calendar year 2013. As of March 31, 2014, the Company has made total earnout payments of $2.2 million for the customer order portion of the earnout arrangement which was achieved at 100%. The Company has recorded the fair value of the remaining revenue earnout arrangement of $0.8 million in Other accrued liabilities in the Condensed Consolidated Balance Sheets. The fair value of the earnout arrangement was based on significant inputs not observable in the market and represents a Level 3 measurement as defined by U.S. GAAP. The Company used the income approach in measuring the fair value of the earnout arrangement, estimating a probability of 40% for the revenue earnout. The impact on fair value of discounting the revenue earnout arrangement was not significant as the earnout period ended on December 31, 2013 and is expected to be paid no later than June 30, 2014. Included in Other expense (income), net for the three and nine months ended March 31, 2014 is a $0.3 million unrealized gain due to a fair value remeasurement that reduced the revenue earnout liability.
	The following table provides a summary by level of the fair value of financial instruments that are measured on a recurring basis for the periods presented ($000):
		Fair Value Measurements at March 31, 2014 Using:
					Quoted
					Prices in
					Active
					Markets		Significant
					for		Other		Significant
					Identical		Observable		Unobservable
					Assets		Inputs		Inputs
		31-Mar-14			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Foreign currency forward contracts	$	48		$	-	$	48	$	-
	Contingent earnout arrangement	$	800		$	-	$	-	$	800
		Fair Value Measurements at June 30, 2013 Using:
					Quoted
					Prices in
					Active
					Markets		Significant
					for		Other		Significant
					Identical		Observable		Unobservable
					Assets		Inputs		Inputs
		30-Jun-13			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Foreign currency forward contracts	$	23		$	-	$	23	$	-
	Contingent earnout arrangement	$	3,300		$	-	$	-	$	3,300
	The Company’s policy is to report transfers into and out of Levels 1 and 2 of the fair value hierarchy at fair values as of the beginning of the period in which the transfers occur. There were no transfers in and out of Levels 1 and 2 of the fair value hierarchy during the three months ended March 31, 2014.
	The following table presents a reconciliation of the beginning and ending fair value measurements of the Company’s Level 3 contingent earnout arrangement related to the acquisition of LightWorks ($000):
		Significant
		Unobservable Inputs
		(Level 3)
	Balance at July 1, 2013	$	3,300
	Payments		(2,200	)
	Changes in fair value		(300	)
	Balance at March 31, 2014	$	800
	The carrying value of Cash and cash equivalents, Accounts receivable and Accounts payable are considered Level 1 among the fair value hierarchy and approximate fair value because of the short-term maturity of those instruments. The Company’s borrowings are considered Level 2 among the fair value hierarchy and have variable interest rates and accordingly their carrying amounts approximate fair value.

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Mar. 31, 2014
Derivative Instruments	'
	Note 15.	Derivative Instruments
	The Company, from time to time, purchases foreign currency forward exchange contracts, primarily in Japanese Yen, that permit it to sell specified amounts of these foreign currencies expected to be received from its export sales for pre-established U.S. dollar amounts at specified dates. These contracts are entered into to limit transactional exposure to changes in currency exchange rates of export sales transactions in which settlement will occur in future periods and which otherwise would expose the Company, on the basis of its aggregate net cash flows in respective currencies, to foreign currency risk.
	The Company has recorded the fair market value of these contracts in the Company’s condensed consolidated financial statements. These contracts had a total notional amount of $7.5 million and $4.7 million at March 31, 2014 and June 30, 2013, respectively. As of March 31, 2014, these forward contracts had expiration dates ranging from April 2014 through June 2014, with Japanese Yen denominations individually ranging from 220 million Yen to 300 million Yen. The Company does not account for these contracts as hedges as defined by U.S. GAAP and records the change in the fair value of these contracts in Other expense (income), net in the Condensed Consolidated Statements of Earnings as they occur. The fair value measurement takes into consideration foreign currency rates and the current creditworthiness of the counterparties to these contracts, as applicable, and is based upon quoted prices for similar assets and liabilities in active markets, or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instruments and thus represents a Level 2 measurement. These contracts are recorded in Other accrued liabilities in the Company’s Condensed Consolidated Balance Sheets. The change in the fair value of these contracts for the three and nine months ended March 31, 2014 and 2013 was insignificant.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Mar. 31, 2014
Commitments and Contingencies	'
	Note  16.	Commitments and Contingencies
	The Company records a warranty reserve as a charge against earnings based on a percentage of sales utilizing actual warranty claims over the last twelve months. The following table summarizes the change in the carrying value of the Company’s warranty reserve, which is a component of Other accrued liabilities in the Company’s Condensed Consolidated Balance Sheets, as of and for the nine months ended March 31, 2014 ($000):
		Nine Months Ended
		31-Mar-14
	Balance-beginning of period	$	1,661
	Payments made during the period		(1,263	)
	Additional warranty liability recorded during the period		1,668
	Warranty liability assumed through acquisition		1,173
	Balance-end of period	$	3,239

PostRetirement_Benefits

Post-Retirement Benefits	9 Months Ended
	Mar. 31, 2014
Post-Retirement Benefits	'
	Note 17.	Post-Retirement Benefits
	In connection with the Company’s acquisition of Laser Enterprise, the Company assumed the existing pension plan (the “Swiss Plan”) covering employees of the Zurich, Switzerland subsidiary which included an $8.9 million unfunded pension liability recorded as part of the preliminary purchase price allocation of Laser Enterprise. This unfunded pension liability is recorded in Other liabilities in the Condensed Consolidated Balance Sheet at March 31, 2014.   Net periodic pension costs associated with the Swiss Plan for the three and nine months ended March 31, 2014 included the following ($000):
		Three Months			Nine Months
		Ended			Ended
		March 31,			March 31,
		2014			2014
	Service cost	$	835		$	1,837
	Interest cost		201			443
	Expected return on plan assets		(331	)		(728	)
	Net amortization		-			-
	Net periodic pension costs	$	705		$	1,552
	Since the acquisition of Laser Enterprise, the Company has contributed $1.1 million to the Swiss Plan.  The Company currently anticipates contributing an additional estimated amount of approximately $0.5 million to the Swiss Plan during the remainder of fiscal year 2014.

Capital_Lease

Capital Lease	9 Months Ended
	Mar. 31, 2014
Capital Lease	'
	Note 18.	Capital Lease
	In December 2013, the Company's HIGHYAG subsidiary entered into a capital lease related to a building in Germany.   The following table shows the future minimum lease payments due under the non-cancelable capital lease ($000):
	Fiscal Year Ending:	Amount
	2014 (remaining)	$	270
	2015		1,081
	2016		1,081
	2017		1,081
	2018		1,081
	Thereafter		13,426
	Total minimum lease payments		18,020
	Less amount representing interest		6,163
	Present value of capitalized payments		11,857
	Less: current portion		451
	Long-term portion	$	11,406
	The current and long-term portion of the capital lease obligation was recorded in Other accrued liabilities and Other liabilities, respectively, in the Company’s Condensed Consolidated Balance Sheets as of March 31, 2014.  The present value of the capitalized payments of $11.9 million was recorded in Property, plant & equipment, net, in the Company’s Condensed Consolidated Balance Sheets as of March 31, 2014, with associated depreciation expense being recorded over the 17 year life of the lease.

Share_Repurchase_Program

Share Repurchase Program	9 Months Ended
	Mar. 31, 2014
Share Repurchase Program	'
	Note  19.	Share Repurchase Program
	In February 2014, the Company’s Board of Directors authorized the Company to purchase up to $20 million of its Common Stock. The share repurchase program (the “Program”) calls for shares to be purchased in the open market or in private transactions from time to time. The Program has no expiration and may be suspended or discontinued at any time.  Shares purchased by the Company are retained as treasury stock and available for general corporate purposes.  As of March 31, 2014, the Company has purchased 750,000 shares of its common stock pursuant to the Program for approximately $12.0 million.

Discontinued_Operation_Tables

Discontinued Operation (Tables)	9 Months Ended
	Mar. 31, 2014
Summary of Revenues and Earnings (Losses) of Discontinued Operation	'
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014		2013
	Revenues	$	-	$	1,230		$	1,849	$	6,306
	Earnings (loss) from discontinued operation before income taxes		-		(166	)	133			(2,563	)
	Income tax benefit (expense)		-		-			-		-
	Earnings (loss) from discontinued operation, net of taxes	$	-	$	(166	)	$	133	$	(2,563	)

Acquisitions_Tables

Acquisitions (Tables)	9 Months Ended
	Mar. 31, 2014
Pro-forma Consolidated Results of Operations	'
		Three Months Ended				Nine Months Ended
		March 31,				March 31,
		2014		2013		2014		2013
	Net revenues	$	173,555	$	189,471	$	546,991	$	489,527
	Earnings from continuing operations attributable to II-VI Incorporated		8,531		14,166		34,377		31,095
	Basic earnings per share from continuing operations attributable to II-VI Incorporated		0.14		0.23		0.55		0.5
	Diluted earnings per share from continuing operations attributable to II-VI Incorporated		0.13		0.22		0.54		0.49
Oclaro's Fiber Amplifier and Micro Optics Business	'
Summary of Purchase Price	'
	Net cash paid at acquisition date	$	79,600
	Cash previously paid		5,000
	Holdback amount recorded in Other liabilities		4,000
	Purchase price	$	88,600
Allocation of Purchase Price of Assets Acquired and Liabilities Assumed at Date of Acquisition	'
	The following table presents the preliminary allocation of the purchase price of the assets acquired at the date of acquisition, as the Company intends to finalize its accounting for the acquisition of Network Solutions during fiscal year 2014 ($000):
	Assets
	Inventories	$	11,314
	Property, plant & equipment		9,700
	Intangible assets		32,900
	Goodwill		34,686
	Total assets acquired	$	88,600
Oclaro Incorporated	'
Summary of Purchase Price	'
	Net cash paid at acquisition date	$	90,601
	Additional cash paid for working capital adjustment		2,475
	Holdback amount recorded in Other accrued liabilities		6,000
	Purchase price	$	99,076
Allocation of Purchase Price of Assets Acquired and Liabilities Assumed at Date of Acquisition	'
	The following table presents the preliminary allocation of the purchase price of the assets acquired and liabilities assumed at the date of acquisition, as the Company intends to finalize its accounting for the acquisition of Laser Enterprise during fiscal year 2014 ($000):
	Assets
	Inventories	$	26,071
	Prepaid and other assets		1,035
	Deferred income taxes		2,376
	Property, plant & equipment		30,200
	Intangible assets		29,800
	Goodwill		41,105
	Total assets acquired	$	130,587
	Liabilities
	Accounts payable	$	2,214
	Deferred income taxes		13,290
	Accrued income taxes		2,714
	Other accrued liabilities		13,293
	Total liabilities assumed	$	31,511
	Net assets acquired	$	99,076

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Mar. 31, 2014
Components of Inventories	'
	The components of inventories were as follows ($000):
		March 31,		June 30,
		2014		2013
	Raw materials	$	76,254	$	59,290
	Work in progress		57,344		43,895
	Finished goods		41,009		38,674
		$	174,607	$	141,859

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	9 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment	'
	Property, plant and equipment consists of the following ($000):
		March 31,			June 30,
		2014			2013
	Land and land improvements	$	2,381		$	2,236
	Buildings and improvements		96,404			87,189
	Machinery and equipment		331,181			276,802
	Construction in progress		14,579			10,831
			444,545			377,058
	Less accumulated depreciation		(232,812	)		(206,386	)
		$	211,733		$	170,672

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Mar. 31, 2014
Changes in Carrying Amount of Goodwill	'
	Changes in the carrying amount of goodwill are as follows ($000):
		Nine Months Ended March 31, 2014
						Near-			Military		Advanced			Active
		Infrared				Infrared			&		Products			Optical
		Optics				Optics			Materials		Group			Products			Total
	Balance-beginning of period	$	9,677			$	60,269		$	30,712	$	22,694		$	-		$	123,352
	Goodwill acquired		-				-			-		-			75,791			75,791
	Goodwill adjustment		-				-			-		(516	)		-			(516	)
	Foreign currency translation		94				143			-		-			-			237
	Balance-end of period	$	9,771			$	60,412		$	30,712	$	22,178		$	75,791		$	198,864
Gross Carrying Amount and Accumulated Amortization	'
	The gross carrying amount and accumulated amortization of the Company’s intangible assets other than goodwill as of March 31, 2014 and June 30, 2013 was as follows ($000):
		31-Mar-14									30-Jun-13
		Gross							Net		Gross						Net
		Carrying				Accumulated			Book		Carrying			Accumulated			Book
		Amount				Amortization			Value		Amount			Amortization			Value
	Technology and Patents	$	50,506			$	(13,393	)	$	37,113	$	39,659		$	(10,455	)	$	29,204
	Trademarks		17,870				(1,018	)		16,852		17,855			(963	)		16,892
	Customer Lists		104,661				(17,521	)		87,140		52,614			(12,189	)		40,425
	Other		1,588				(1,430	)		158		1,580			(1,400	)		180
	Total	$	174,625			$	(33,362	)	$	141,263	$	111,708		$	(25,007	)	$	86,701
Estimated Amortization Expense for Existing Intangible Assets for Each of Five Succeeding Years	'
	At March 31, 2014, the estimated amortization expense for existing intangible assets for each of the five succeeding fiscal years is as follows ($000):
	Year Ending June 30,
	Remaining 2014			$	3,096
	2015				11,806
	2016				11,739
	2017				11,729
	2018				11,254

Debt_Tables

Debt (Tables)	9 Months Ended
	Mar. 31, 2014
Components of Debt	'
	The components of debt for the periods indicated were as follows ($000):
		March 31,			June 30,
		2014			2013
	Line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively	$	170,000		$	111,000
	Term loan, interest at LIBOR, as defined, plus 1.25%		90,000			-
	Yen denominated line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively		2,907			3,036
	Total debt		262,907			114,036
	Current portion of long-term debt		(20,000	)		-
	Long-term debt, less current portion	$	242,907		$	114,036
Remaining Annual Amounts of Principal Payments	'
	Remaining annual principal payments under the Company’s existing credit facilities as of March 31, 2014 were as follows:
								U.S.
								Dollar
			Term			Yen Line		Line of
	Period		Loan			of Credit		Credit		Total
	Year 1		$	20,000		$	-	$	-	$	20,000
	Year 2			20,000			-		-		20,000
	Year 3			20,000			2,907		-		22,907
	Year 4			20,000			-		-		20,000
	Year 5			10,000			-		170,000		180,000
	Total		$	90,000		$	2,907	$	170,000	$	262,907

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Mar. 31, 2014
Computation of Earnings Per Share	'
	The following table sets forth the computation of earnings per share attributable to II-VI Incorporated for the periods indicated. Weighted average shares issuable upon the exercises of stock options and the release of performance and restricted shares that were not included in the calculation were approximately 542,000 and 433,000, respectively, for the three and nine months ended March 31, 2014, and 410,000 and 429,000, respectively, for the three and nine months ended March 31, 2013, because they were anti-dilutive ($000 except per share data):
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014		2013
	Earnings from continuing operations attributable to II-VI Incorporated	$	8,531	$	16,035		$	25,661	$	43,350
	Earnings (loss) from discontinued operation		-		(166	)		133		(2,563	)
	Net earnings attributable to II-VI Incorporated	$	8,531	$	15,869		$	25,794	$	40,787
	Divided by:
	Weighted average shares		62,355		62,130			62,426		62,482
	Basic earnings (loss) attributable to II-VI Incorporated per common share:
	Continuing operations	$	0.14	$	0.26		$	0.41	$	0.69
	Discontinued operation	$	-	$	(0.00	)	$	-	$	(0.04	)
	Consolidated	$	0.14	$	0.26		$	0.41	$	0.65
	Earnings from continuing operations attributable to II-VI Incorporated	$	8,531	$	16,035		$	25,661	$	43,350
	Earnings (loss) from discontinued operation		-		(166	)		133		(2,563	)
	Net earnings attributable to II-VI Incorporated	$	8,531	$	15,869		$	25,794	$	40,787
	Divided by:
	Weighted average shares		62,355		62,130			62,426		62,482
	Dilutive effect of common stock equivalents		1,391		1,594			1,444		1,483
	Diluted weighted average common shares		63,746		63,724			63,870		63,965
	Diluted earnings (loss) attributable to II-VI Incorporated per common share:
	Continuing operations	$	0.13	$	0.25		$	0.4	$	0.68
	Discontinued operation	$	-	$	(0.00	)	$	-	$	(0.04	)
	Consolidated	$	0.13	$	0.25		$	0.4	$	0.64

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Mar. 31, 2014
Financial Information of Company's Operation by Segment	'
	The following tables summarize selected financial information of the Company’s operations by segment ($000):
		Three Months Ended March 31, 2014
				Near-			Military			Advanced		Active
		Infrared		Infrared			&			Products		Optical
		Optics		Optics			Materials			Group		Products			Eliminations			Total
	Revenues	$	50,259	$	33,554		$	22,228		$	29,961	$	37,553		$	-		$	173,555
	Inter-segment revenues		306		812			1,941			1,490		-			(4,549	)		-
	Segment earnings (loss)		10,008		2,107			1,342			3,197		(7,911	)		-			8,743
	Interest expense		-		-			-			-		-			-			(1,412	)
	Other income, net		-		-			-			-		-			-			1,694
	Income taxes		-		-			-			-		-			-			(494	)
	Earnings from discontinued operation		-		-			-			-		-			-			-
	Net earnings		-		-			-			-		-			-			8,531
	Depreciation and amortization		2,281		4,026			1,940			2,462		2,483			-			13,192
	Segment assets		232,658		303,284			119,438			178,543		256,141			-			1,090,064
	Expenditures for property, plant and equipment		2,352		954			1,265			1,336		571			-			6,478
	Investment		-		-			-			11,409		-			-			11,409
	Goodwill		9,771		60,412			30,712			22,178		75,791			-			198,864
		Three Months Ended March 31, 2013
				Near-			Military			Advanced
		Infrared		Infrared			&			Products
		Optics		Optics			Materials			Group		Eliminations			Total
	Revenues	$	52,886	$	35,821		$	27,639		$	27,594	$	-		$	143,940
	Inter-segment revenues		730		(289	)		695			1,303		(2,439	)		-
	Segment earnings (loss)		13,969		3,774			(384	)		810		-			18,169
	Interest expense		-		-			-			-		-			(449	)
	Other income, net		-		-			-			-		-			1,401
	Income taxes		-		-			-			-		-			(2,861	)
	Loss from discontinued operation		-		-			-			-		-			(166	)
	Net earnings		-		-			-			-		-			16,094
	Depreciation and amortization		2,032		4,228			1,984			2,481		-			10,725
	Expenditures for property, plant and equipment		823		1,981			455			1,027		-			4,286
		Nine Months Ended March 31, 2014
				Near-			Military			Advanced		Active
		Infrared		Infrared			&			Products		Optical
		Optics		Optics			Materials			Group		Products			Eliminations			Total
	Revenues	$	152,066	$	109,298		$	72,982		$	85,273	$	75,721					$	495,340
	Inter-segment revenues		769		1,580			5,251			4,848		-			(12,448	)		-
	Segment earnings (loss)		28,699		7,726			8,219			6,031		(18,893	)		-			31,782
	Interest expense		-		-			-			-		-			-			(3,064	)
	Other income, net		-		-			-			-		-			-			2,766
	Income taxes		-		-			-			-		-			-			(5,823	)
	Earnings from discontinued operation		-		-			-			-		-			-			133
	Net earnings		-		-			-			-		-			-			25,794
	Depreciation and amortization		6,627		12,774			6,105			7,461		6,458			-			39,425
	Expenditures for property, plant and equipment		7,264		6,396			3,004			2,886		1,217			-			20,767
		Nine Months Ended March 31, 2013
				Near-			Military			Advanced
		Infrared		Infrared			&			Products
		Optics		Optics			Materials			Group		Eliminations			Total
	Revenues	$	149,852	$	113,463		$	67,858		$	65,872	$	-		$	397,045
	Inter-segment revenues		1,881		679			3,033			3,863		(9,456	)		-
	Segment earnings (loss)		36,343		16,637			(1,210	)		325		-			52,095
	Interest expense		-		-			-			-		-			(708	)
	Other income, net		-		-			-			-		-			6,713
	Income taxes		-		-			-			-		-			(13,844	)
	Loss from discontinued operation		-		-			-			-		-			(2,563	)
	Net earnings		-		-			-			-		-			41,693
	Depreciation and amortization		6,264		12,900			4,991			5,737		-			29,892
	Expenditures for property, plant and equipment		3,411		6,184			2,428			5,407		-			17,430

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Mar. 31, 2014
Share-Based Compensation Expense by Award Type	'
	Share-based compensation expense is allocated approximately 20% to cost of goods sold and 80% to selling, general and administrative expense based on the employee classification of the grantees. Share-based compensation expense for the periods indicated was as follows ($000):
		Three Months Ended			Three Months Ended			Nine Months Ended			Nine Months Ended
		31-Mar-14			31-Mar-13			31-Mar-14			31-Mar-13
	Stock Options and Cash-Based Stock Appreciation Rights	$	1,190		$	1,152		$	4,566		$	3,916
	Restricted Share Awards and Cash-Based Restricted Share Unit Awards		930			1,144			3,539			3,240
	Performance Share Awards and Cash-Based Performance Share Unit Awards		785			555			2,485			2,582
		$	2,905		$	2,851		$	10,590		$	9,738
Schedule of Fair Value Assumptions under Stock Option Plan	'
	The Company utilizes the Black-Scholes valuation model for estimating the fair value of these awards. The weighted-average fair value of awards granted under the Plan were $6.63 and $8.57 per award, respectively, during the three and nine months ended March 31, 2014 and were $7.84 and $8.44 per award, respectively, during the three and nine months ended March 31, 2013, using the following assumptions:
		Three Months Ended			Three Months Ended			Nine Months Ended			Nine Months Ended
		31-Mar-14			31-Mar-13			31-Mar-14			31-Mar-13
	Risk-free interest rate		1.82	%		1.1	%		1.75	%		0.94	%
	Expected volatility		46	%		48	%		47	%		49	%
	Expected life of options	5.5 years			4.7 years			5.7 years			5.7 years
	Dividend yield	None			None			None			None

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Mar. 31, 2014
Summary by Level of Fair Value of Financial Instruments Measured on Recurring Basis	'
	The following table provides a summary by level of the fair value of financial instruments that are measured on a recurring basis for the periods presented ($000):
		Fair Value Measurements at March 31, 2014 Using:
					Quoted
					Prices in
					Active
					Markets		Significant
					for		Other		Significant
					Identical		Observable		Unobservable
					Assets		Inputs		Inputs
		31-Mar-14			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Foreign currency forward contracts	$	48		$	-	$	48	$	-
	Contingent earnout arrangement	$	800		$	-	$	-	$	800
		Fair Value Measurements at June 30, 2013 Using:
					Quoted
					Prices in
					Active
					Markets		Significant
					for		Other		Significant
					Identical		Observable		Unobservable
					Assets		Inputs		Inputs
		30-Jun-13			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Foreign currency forward contracts	$	23		$	-	$	23	$	-
	Contingent earnout arrangement	$	3,300		$	-	$	-	$	3,300
Reconciliation of Beginning and Ending Fair-Value Measurements of Level Three Contingent Earnout Arrangement Related to Acquisition of LightWorks	'
	The following table presents a reconciliation of the beginning and ending fair value measurements of the Company’s Level 3 contingent earnout arrangement related to the acquisition of LightWorks ($000):
		Significant
		Unobservable Inputs
		(Level 3)
	Balance at July 1, 2013	$	3,300
	Payments		(2,200	)
	Changes in fair value		(300	)
	Balance at March 31, 2014	$	800

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Mar. 31, 2014
Schedule of Change in Carrying Value of Warranty Reserve	'
	The Company records a warranty reserve as a charge against earnings based on a percentage of sales utilizing actual warranty claims over the last twelve months. The following table summarizes the change in the carrying value of the Company’s warranty reserve, which is a component of Other accrued liabilities in the Company’s Condensed Consolidated Balance Sheets, as of and for the nine months ended March 31, 2014 ($000):
		Nine Months Ended
		31-Mar-14
	Balance-beginning of period	$	1,661
	Payments made during the period		(1,263	)
	Additional warranty liability recorded during the period		1,668
	Warranty liability assumed through acquisition		1,173
	Balance-end of period	$	3,239

PostRetirement_Benefits_Tables

Post-Retirement Benefits (Tables)	9 Months Ended
	Mar. 31, 2014
Schedule of Net Periodic Pension Costs	'
	In connection with the Company’s acquisition of Laser Enterprise, the Company assumed the existing pension plan (the “Swiss Plan”) covering employees of the Zurich, Switzerland subsidiary which included an $8.9 million unfunded pension liability recorded as part of the preliminary purchase price allocation of Laser Enterprise. This unfunded pension liability is recorded in Other liabilities in the Condensed Consolidated Balance Sheet at March 31, 2014.   Net periodic pension costs associated with the Swiss Plan for the three and nine months ended March 31, 2014 included the following ($000):
		Three Months			Nine Months
		Ended			Ended
		March 31,			March 31,
		2014			2014
	Service cost	$	835		$	1,837
	Interest cost		201			443
	Expected return on plan assets		(331	)		(728	)
	Net amortization		-			-
	Net periodic pension costs	$	705		$	1,552

Capital_Lease_Tables

Capital Lease (Tables)	9 Months Ended
	Mar. 31, 2014
Schedule of Future Minimum Lease Payments Due Under Non-Cancelable Capital Lease	'
	In December 2013, the Company's HIGHYAG subsidiary entered into a capital lease related to a building in Germany.   The following table shows the future minimum lease payments due under the non-cancelable capital lease ($000):
	Fiscal Year Ending:	Amount
	2014 (remaining)	$	270
	2015		1,081
	2016		1,081
	2017		1,081
	2018		1,081
	Thereafter		13,426
	Total minimum lease payments		18,020
	Less amount representing interest		6,163
	Present value of capitalized payments		11,857
	Less: current portion		451
	Long-term portion	$	11,406

Summary_of_Revenues_and_Earnin

Summary of Revenues and Earnings (Losses) of Discontinued Operation (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Disposal Group, Including Discontinued Operation, Income Statement Disclosures	'	'	'	'
Earnings (loss) from discontinued operation, net of taxes	'	($166)	$133	($2,563)
Tellurium product line	'	'	'	'
Disposal Group, Including Discontinued Operation, Income Statement Disclosures	'	'	'	'
Revenues	'	1,230	1,849	6,306
Earnings (loss) from discontinued operation before income taxes	'	-166	133	-2,563
Income tax benefit (expense)	'	'	'	'
Earnings (loss) from discontinued operation, net of taxes	'	($166)	$133	($2,563)

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	9 Months Ended			1 Months Ended		3 Months Ended	9 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Nov. 30, 2013	Sep. 12, 2013	Mar. 31, 2014	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
				Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro Incorporated	Oclaro Incorporated	Oclaro Incorporated	Acquisitions of Two Oclaro
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Net cash paid at acquisition date	$177,676,000	$126,165,000	'	$79,600,000	$5,000,000	'	'	$90,601,000	'	'	'
Purchase of business - holdback amount recorded in other liabilities	'	'	'	4,000,000	'	'	'	6,000,000	'	2,000,000	'
Goodwill	198,864,000	'	123,352,000	34,686,000	'	'	'	41,105,000	'	'	'
Business acquisition, revenue of acquired entity	'	'	'	'	'	19,400,000	32,600,000	'	18,100,000	43,100,000	'
Business acquisition, earnings of acquired entity	'	'	'	'	'	500,000	2,300,000	'	5,000,000	12,300,000	'
Business acquisition, cash acquired	'	'	'	'	'	'	'	1,700,000	'	'	'
Payment of additional amount for working capital adjustment	'	'	'	'	'	'	'	2,475,000	'	2,500,000	'
Business acquisition, transaction costs	'	'	'	'	'	'	'	'	'	3,700,000	3,700,000
Business acquisition, transaction costs, tax amount	'	'	'	'	'	'	'	'	'	$200,000	'

Summary_of_Purchase_Price_Deta

Summary of Purchase Price (Detail) (USD $)	9 Months Ended		1 Months Ended			9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Nov. 30, 2013	Sep. 12, 2013	Sep. 30, 2013	Mar. 31, 2014
			Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro Incorporated	Oclaro Incorporated
Business Acquisition [Line Items]	'	'	'	'	'	'
Net cash paid at acquisition date	$177,676,000	$126,165,000	$79,600,000	$5,000,000	$90,601,000	'
Purchase of business - holdback amount recorded in other liabilities	'	'	4,000,000	'	6,000,000	2,000,000
Purchase price	'	'	88,600,000	'	99,076,000	'
Additional cash paid for working capital adjustment	'	'	'	'	$2,475,000	$2,500,000

Allocation_of_Purchase_Price_o

Allocation of Purchase Price of Assets Acquired and Liabilities Assumed at Date of Acquisition (Detail) (USD $)	Mar. 31, 2014	Jun. 30, 2013	Nov. 30, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified			Oclaro's Fiber Amplifier and Micro Optics Business	Oclaro Incorporated
Assets	'	'	'	'
Inventories	'	'	$11,314	$26,071
Prepaid and other assets	'	'	'	1,035
Deferred income taxes	'	'	'	2,376
Property, plant & equipment	'	'	9,700	30,200
Intangible assets	'	'	32,900	29,800
Goodwill	198,864	123,352	34,686	41,105
Total assets acquired	'	'	88,600	130,587
Liabilities	'	'	'	'
Accounts payable	'	'	'	2,214
Deferred income taxes	'	'	'	13,290
Accrued income taxes	'	'	'	2,714
Other accrued liabilities	'	'	'	13,293
Total liabilities assumed	'	'	'	31,511
Net assets acquired	'	'	'	$99,076

Proforma_Consolidated_Results_

Pro-forma Consolidated Results of Operations (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]	'	'	'	'
Net revenues	$173,555	$189,471	$546,991	$489,527
Earnings from continuing operations attributable to II-VI Incorporated	$8,531	$14,166	$34,377	$31,095
Basic earnings per share from continuing operations attributable to II-VI Incorporated	$0.14	$0.23	$0.55	$0.50
Diluted earnings per share from continuing operations attributable to II-VI Incorporated	$0.13	$0.22	$0.54	$0.49

Investment_Additional_Informat

Investment - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Schedule Of Equity Method Investments [Line Items]	'	'	'	'	'
Equity method investment, ownership percentage	20.20%	'	20.20%	'	'
Total carrying value of investment	$11,409	'	$11,409	'	$11,200
Pro-rata share of earnings	$100	$200	$517	$822	'

Components_of_Inventories_Deta

Components of Inventories (Detail) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Inventory [Line Items]	'	'
Raw materials	$76,254	$59,290
Work in progress	57,344	43,895
Finished goods	41,009	38,674
Inventories, Total	$174,607	$141,859

Property_Plant_and_Equipment_D

Property Plant and Equipment (Detail) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Property Plant And Equipment [Line Items]	'	'
Land and land improvements	$2,381	$2,236
Buildings and improvements	96,404	87,189
Machinery and equipment	331,181	276,802
Construction in progress	14,579	10,831
Property, Plant and Equipment, gross	444,545	377,058
Less accumulated depreciation	-232,812	-206,386
Property, Plant and Equipment, net	$211,733	$170,672

Changes_in_Carrying_Amount_of_

Changes in Carrying Amount of Goodwill (Detail) (USD $)	9 Months Ended					9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014	Mar. 31, 2014
		Infrared Optics	Near-Infrared Optics	Military & Materials	Military & Materials	Advanced Products Group	Active Optical Products
		Operating Segments	Operating Segments	Operating Segments	Operating Segments	Operating Segments	Operating Segments
Goodwill [Line Items]	'	'	'	'	'	'	'
Balance-beginning of period	$123,352	$9,677	$60,269	$30,712	$30,712	$22,694	'
Goodwill acquired	75,791	'	'	'	'	'	75,791
Goodwill adjustment	-516	'	'	'	'	-516	'
Foreign currency translation	237	94	143	'	'	'	'
Balance-end of period	$198,864	$9,771	$60,412	$30,712	$30,712	$22,178	$75,791

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Customer Lists

Customer Lists

Customer Lists

Patents

Patents

Patents

Trade Names

M Cubed

Oclaro Incorporated

Oclaro Incorporated

Oclaro Incorporated

Minimum

Maximum

Minimum

Maximum

Technology and Patents

Customer Lists

Goodwill And Other Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill adjustment

'

'

($516,000)

'

'

'

'

'

'

'

'

$500,000

'

'

'

Business acquisition, intangible assets recorded

'

'

'

'

'

'

'

'

'

'

'

'

29,800,000

10,800,000

51,900,000

Amortization expense recorded on intangible assets

2,600,000

2,200,000

8,200,000

4,600,000

'

'

'

'

'

'

'

'

'

'

'

Amortization period of patents and customer lists, in months

'

'

'

'

'153 months

'120 months

'192 months

'120 months

'120 months

'240 months

'

'

'

'

'

Carrying amount of trade names acquired

'

'

'

'

'

'

'

'

'

'

$16,400,000

'

'

'

'

Gross_Carrying_Amount_and_Accu

Gross Carrying Amount and Accumulated Amortization (Detail) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Finite Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$174,625	$111,708
Accumulated Amortization	-33,362	-25,007
Net Book Value	141,263	86,701
Technology and Patents	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	50,506	39,659
Accumulated Amortization	-13,393	-10,455
Net Book Value	37,113	29,204
Trademarks	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	17,870	17,855
Accumulated Amortization	-1,018	-963
Net Book Value	16,852	16,892
Customer Lists	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	104,661	52,614
Accumulated Amortization	-17,521	-12,189
Net Book Value	87,140	40,425
Other	'	'
Finite Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	1,588	1,580
Accumulated Amortization	-1,430	-1,400
Net Book Value	$158	$180

Estimated_Amortization_Expense

Estimated Amortization Expense for Existing Intangible Assets for Each of Five Succeeding Years (Detail) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Finite Lived Intangible Assets [Line Items]	'
Remaining 2014	$3,096
2015	11,806
2016	11,739
2017	11,729
2018	$11,254

Components_of_Debt_Detail

Components of Debt (Detail) (USD $)	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'	'
Line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively	$170,000	'	$111,000
Term loan, interest at LIBOR, as defined, plus 1.25%	90,000	100,000	'
Yen denominated line of credit, interest at LIBOR, as defined, plus 1.50% and 1.25%, respectively	2,907	'	3,036
Total debt	262,907	'	114,036
Current portion of long-term debt	-20,000	'	'
Long-term debt, less current portion	$242,907	'	$114,036

Components_of_Debt_Parenthetic

Components of Debt (Parenthetical) (Detail) (London Interbank Offered Rate (LIBOR))	6 Months Ended	9 Months Ended
	Jun. 30, 2013	Mar. 31, 2014
Line of credit	'	'
Debt Instrument [Line Items]	'	'
Debt instrument, rate added on variable rate	1.25%	1.50%
Term Loans	'	'
Debt Instrument [Line Items]	'	'
Debt instrument, rate added on variable rate	'	1.25%
Yen denominated line of credit	'	'
Debt Instrument [Line Items]	'	'
Debt instrument, rate added on variable rate	1.25%	1.50%

Debt_Additional_Information_De

Debt - Additional Information (Detail)

1 Months Ended

9 Months Ended

1 Months Ended

1 Months Ended

6 Months Ended

9 Months Ended

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2013

Jun. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

USD ($)

USD ($)

USD ($)

JPY (¥)

Revolving Credit Facility

Revolving Credit Facility

Yen denominated line of credit

Yen Loan

London Interbank Offered Rate (LIBOR)

London Interbank Offered Rate (LIBOR)

London Interbank Offered Rate (LIBOR)

London Interbank Offered Rate (LIBOR)

London Interbank Offered Rate (LIBOR)

London Interbank Offered Rate (LIBOR)

USD ($)

Maximum

JPY (¥)

JPY (¥)

Revolving Credit Facility

Revolving Credit Facility

Yen denominated line of credit

Yen denominated line of credit

Yen denominated line of credit

Yen denominated line of credit

USD ($)

Maximum

Minimum

Maximum

Minimum

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit, maximum borrowing capacity

'

'

'

'

'

$225,000,000

'

'

'

'

'

'

'

'

'

Line of credit facility, prior borrowing capacity

'

'

'

'

'

140,000,000

'

'

'

'

'

'

'

'

'

Term loan

100,000,000

90,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Term loan, quarterly principal Payment

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term loan, first quarterly principal payment commencement date

1-Oct-13

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility, optional additional borrowing amount

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

Credit facility, term

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

Debt instrument, month and year of maturity

'

'

'

'

'

'2018-09

'

'2016-06

'

'

'

'

'

'

'

Debt instrument, rate added on variable rate

'

'

'

'

'

'

'

'

'

1.75%

0.75%

1.25%

1.50%

1.50%

0.63%

Financing cost incurred

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred financing costs

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility

'

'

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

Amount borrowed

'

'

'

'

300,000,000

'

'

'

300,000,000

'

'

'

'

'

'

Available credit under lines of credit

'

55,400,000

'

29,800,000

'

'

'

'

'

'

'

'

'

'

'

Total outstanding letters of credit

'

$1,500,000

'

$1,300,000

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate of total borrowings

'

1.70%

1.20%

'

'

'

'

'

'

'

'

'

'

'

'

Remaining_Annual_Amounts_of_Pr

Remaining Annual Amounts of Principal Payments of Credit Facility (Detail) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Year 1	$20,000	'
Year 2	20,000	'
Year 3	22,907	'
Year 4	20,000	'
Year 5	180,000	'
Total debt	262,907	114,036
Term Loans	'	'
Debt Instrument [Line Items]	'	'
Year 1	20,000	'
Year 2	20,000	'
Year 3	20,000	'
Year 4	20,000	'
Year 5	10,000	'
Total debt	90,000	'
Yen denominated line of credit	'	'
Debt Instrument [Line Items]	'	'
Year 3	2,907	'
Total debt	2,907	'
Line of credit	'	'
Debt Instrument [Line Items]	'	'
Year 5	170,000	'
Total debt	$170,000	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Income Taxes [Line Items]	'	'	'
Effective income tax rate	18.50%	23.80%	'
U.S. statutory rate	35.00%	'	'
Unrecognized tax benefits, reduction resulting from statute of limitation	$1.40	'	'
Unrecognized tax benefits that would impact effective tax rate	$3	'	$3.30

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'	'	'
Weighted average Shares issuable upon the exercises of stock options excluded from the dilutive share calculation	542,000	410,000	433,000	429,000

Computation_of_Earnings_Per_Sh

Computation of Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Line Items]	'	'	'	'
Earnings from continuing operations attributable to II-VI Incorporated	$8,531	$16,035	$25,661	$43,350
Earnings (loss) from discontinued operation	'	-166	133	-2,563
Net Earnings Attributable to II-VI Incorporated	$8,531	$15,869	$25,794	$40,787
Weighted average shares	62,355	62,130	62,426	62,482
Basic earnings (loss) attributable to II-VI Incorporated per common share:	'	'	'	'
Continuing Operations	$0.14	$0.26	$0.41	$0.69
Discontinued Operation	'	$0	$0	($0.04)
Consolidated	$0.14	$0.26	$0.41	$0.65
Dilutive effect of common stock equivalents	1,391	1,594	1,444	1,483
Diluted weighted average common shares	63,746	63,724	63,870	63,965
Diluted earnings (loss) attributable to II-VI Incorporated per common share:	'	'	'	'
Continuing Operations	$0.13	$0.25	$0.40	$0.68
Discontinued Operation	'	$0	$0	($0.04)
Consolidated	$0.13	$0.25	$0.40	$0.64

Financial_Information_of_Compa

Financial Information of Company's Operation by Segment (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	$173,555	$143,940	$495,340	$397,045	'
Segment earnings (loss)	8,743	18,169	31,782	52,095	'
Interest expense	-1,412	-449	-3,064	-708	'
Other income, net	1,694	1,401	2,766	6,713	'
Income taxes	-494	-2,861	-5,823	-13,844	'
Earnings (loss) from discontinued operation	'	-166	133	-2,563	'
Net earnings	8,531	16,094	25,794	41,693	'
Depreciation and amortization	13,192	10,725	39,425	29,892	'
Segment assets	1,090,064	'	1,090,064	'	863,802
Expenditures for property, plant and equipment	6,478	4,286	20,767	17,430	'
Investment	11,409	'	11,409	'	11,200
Goodwill	198,864	'	198,864	'	123,352
Eliminations	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Inter-segment revenues	-4,549	-2,439	-12,448	-9,456	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Infrared Optics | Operating Segments	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	50,259	52,886	152,066	149,852	'
Inter-segment revenues	306	730	769	1,881	'
Segment earnings (loss)	10,008	13,969	28,699	36,343	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Depreciation and amortization	2,281	2,032	6,627	6,264	'
Segment assets	232,658	'	232,658	'	'
Expenditures for property, plant and equipment	2,352	823	7,264	3,411	'
Goodwill	9,771	'	9,771	'	9,677
Near-Infrared Optics | Operating Segments	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	33,554	35,821	109,298	113,463	'
Inter-segment revenues	812	-289	1,580	679	'
Segment earnings (loss)	2,107	3,774	7,726	16,637	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Depreciation and amortization	4,026	4,228	12,774	12,900	'
Segment assets	303,284	'	303,284	'	'
Expenditures for property, plant and equipment	954	1,981	6,396	6,184	'
Goodwill	60,412	'	60,412	'	60,269
Military & Materials | Operating Segments	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	22,228	27,639	72,982	67,858	'
Inter-segment revenues	1,941	695	5,251	3,033	'
Segment earnings (loss)	1,342	-384	8,219	-1,210	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Depreciation and amortization	1,940	1,984	6,105	4,991	'
Segment assets	119,438	'	119,438	'	'
Expenditures for property, plant and equipment	1,265	455	3,004	2,428	'
Goodwill	30,712	'	30,712	'	30,712
Advanced Products Group | Operating Segments	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	29,961	27,594	85,273	65,872	'
Inter-segment revenues	1,490	1,303	4,848	3,863	'
Segment earnings (loss)	3,197	810	6,031	325	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Depreciation and amortization	2,462	2,481	7,461	5,737	'
Segment assets	178,543	'	178,543	'	'
Expenditures for property, plant and equipment	1,336	1,027	2,886	5,407	'
Investment	11,409	'	11,409	'	'
Goodwill	22,178	'	22,178	'	22,694
Active Optical Products | Operating Segments	'	'	'	'	'
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]	'	'	'	'	'
Revenues	37,553	'	75,721	'	'
Segment earnings (loss)	-7,911	'	-18,893	'	'
Earnings (loss) from discontinued operation	'	'	'	'	'
Depreciation and amortization	2,483	'	6,458	'	'
Segment assets	256,141	'	256,141	'	'
Expenditures for property, plant and equipment	571	'	1,217	'	'
Goodwill	$75,791	'	$75,791	'	'

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Percentage of share based compensation expense allocated to cost of sales	20.00%	'	'	'
Percentage of share based compensation expense allocated to selling, general and administrative expense	80.00%	'	'	'
Stock Options and Cash-Based Stock Appreciation Rights	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Weighted-average fair values of stock options granted under the stock option Plan	$6.63	$7.84	$8.57	$8.44
Share based compensation, estimated forfeiture percentage	'	'	16.00%	'
Restricted Share Awards and Cash-Based Restricted Share Unit Awards	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Share based compensation, estimated forfeiture percentage	'	'	7.50%	'
Share based compensation, vesting period years	'	'	'3 years	'
Performance Stock and Performance Stock Unit | Minimum	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Performance share grant, period	'	'	'24 months	'
Performance Stock and Performance Stock Unit | Maximum	'	'	'	'
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]	'	'	'	'
Performance share grant, period	'	'	'48 months	'

ShareBased_Compensation_Expens

Share-Based Compensation Expense by Award Type (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Share based compensation expense	$2,905	$2,851	$10,590	$9,738
Stock Options and Cash-Based Stock Appreciation Rights	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Share based compensation expense	1,190	1,152	4,566	3,916
Restricted Share Awards and Cash-Based Restricted Share Unit Awards	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Share based compensation expense	930	1,144	3,539	3,240
Performance Share Awards and Cash-Based Performance Share Unit Awards	'	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]	'	'	'	'
Share based compensation expense	$785	$555	$2,485	$2,582

Fair_Value_Assumptions_for_Sto

Fair Value Assumptions for Stock Option and Stock Appreciation Rights (Detail)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Fair Value Option [Line Items]	'	'	'	'
Risk-free interest rate	1.82%	1.10%	1.75%	0.94%
Expected volatility	46.00%	48.00%	47.00%	49.00%
Expected life of options	'5 years 6 months	'4 years 8 months 12 days	'5 years 8 months 12 days	'5 years 8 months 12 days
Dividend yield	'	'	'	'

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'	'
Business acquisition, additional cash earnout opportunities	$4,200,000	$4,200,000
Fair value of earnout arrangement, probability	40.00%	40.00%
Business acquisition, total earnout payments	'	2,200,000
Business acquisition, percentage of earnout arrangement achieved	100.00%	100.00%
Business acquisition, fair value of remaining revenue earnout arrangement recorded in other accrued liabilities	800,000	800,000
Unrealized gain due to fair value re-measurement	$300,000	$300,000

Summary_by_Level_of_Fair_Value

Summary by Level of Fair Value of Financial Instruments Measured on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Liabilities:	'	'
Foreign currency forward contracts	$48	'
Contingent earnout arrangement	800	3,300
Foreign currency forward contracts	'	23
Fair Value, Inputs, Level 2	'	'
Liabilities:	'	'
Foreign currency forward contracts	48	'
Foreign currency forward contracts	'	23
Fair Value, Inputs, Level 3	'	'
Liabilities:	'	'
Contingent earnout arrangement	$800	$3,300

Reconciliation_of_Beginning_an

Reconciliation of Beginning and Ending Fair-Value Measurements of Level Three Contingent Earnout Arrangement Related to Acquisition of LightWorks (Detail) (USD $)	3 Months Ended	9 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014
			Fair Value, Measurements, Recurring	Fair Value, Measurements, Recurring	Fair Value, Inputs, Level 3
					Fair Value, Measurements, Recurring
Business Acquisition Contingent Consideration [Line Items]	'	'	'	'	'
Balance - beginning of period	'	'	$800	$3,300	$3,300
Payments	'	'	'	'	-2,200
Changes in fair value	-300	-300	'	'	-300
Balance - end of period	'	'	$800	$3,300	$800

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail)	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014	Mar. 31, 2014
In Millions, unless otherwise specified	USD ($)	USD ($)	Minimum	Maximum
			JPY (¥)	JPY (¥)
Derivative [Line Items]	'	'	'	'
Foreign currency forward exchange contracts, notional amount	$7.50	$4.70	'	'
Foreign currency forward exchange contracts maturity amount	'	'	¥ 220	¥ 300

Change_in_Caring_Value_of_Warr

Change in Caring Value of Warranty Reserve (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Contingencies And Commitments [Line Items]	'
Balance-beginning of period	$1,661
Payments made during the period	-1,263
Additional warranty liability recorded during the period	1,668
Warranty liability assumed through acquisition	1,173
Balance-end of period	$3,239

PostRetirement_Benefits_Additi

Post-Retirement Benefits - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]	'
Post-Retirement benefits contributions	$1.10
Post-Retirement benefits expected contributions for next year	0.5
Unfunded Pension Plan	'
Defined Benefit Plan Disclosure [Line Items]	'
Pension liability	$8.90

Schedule_of_Net_Periodic_Pensi

Schedule of Net Periodic Pension Costs (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	$835	$1,837
Interest cost	201	443
Expected return on plan assets	-331	-728
Net amortization	'	'
Net periodic pension costs	$705	$1,552

Schedule_of_Future_Minimum_Lea

Schedule of Future Minimum Lease Payments Due Under Non-Cancelable Capital Lease (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Capital Leased Assets [Line Items]	'	'
2014 (remaining)	'	$270
2015	'	1,081
2016	'	1,081
2017	'	1,081
2018	'	1,081
Thereafter	'	13,426
Total minimum lease payments	'	18,020
Less amount representing interest	'	6,163
Present value of capitalized payments	11,857	11,857
Less: current portion	'	451
Long-term portion	'	$11,406

Capital_Lease_Additional_Infor

Capital Lease - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Capital Leased Assets [Line Items]	'	'
Capitalized payments property plant and equipment	$11,857	$11,857
Property plant and equipment depreciation expenses useful life of leases	'17 years	'

Share_Repurchase_Program_Detai

Share Repurchase Program (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended
	Feb. 28, 2014	Mar. 31, 2014	Mar. 31, 2014
Equity Class Of Treasury Stock [Line Items]	'	'	'
Stock repurchase program, authorized amount	$20,000,000	'	'
Treasury stock, shares	'	750,000	'
Purchase of Treasury Stock	'	$11,989,000	$11,989,000