Business Combinations and Dispositions - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended					3 Months Ended				0 Months Ended				3 Months Ended			12 Months Ended					0 Months Ended				12 Months Ended		0 Months Ended	12 Months Ended				12 Months Ended		0 Months Ended		12 Months Ended	0 Months Ended		12 Months Ended					0 Months Ended	12 Months Ended
	Dec. 31, 2011	Jun. 29, 2013	Oct. 01, 2011	Jun. 28, 2014	Jun. 29, 2013	Jun. 30, 2012	Jul. 23, 2012	Jul. 02, 2011	Jun. 29, 2013 Developed Technology	Jun. 29, 2013 Contract Backlog	Jun. 29, 2013 Customer Relationships	Jun. 29, 2013 Trademarks and Other	Jul. 23, 2012 Common Stock	Jul. 23, 2012 Outstanding Options	Jul. 23, 2012 Stock Appreciation Rights	Jul. 23, 2012 Opnext	Jun. 29, 2013 Opnext	Mar. 30, 2013 Opnext	Sep. 29, 2012 Opnext	Jun. 28, 2014 Opnext	Jun. 29, 2013 Opnext	Jun. 30, 2012 Opnext	Jul. 23, 2012 Opnext	Mar. 26, 2012 Opnext	Jul. 23, 2012 Opnext Developed Technology	Jul. 23, 2012 Opnext Customer Relationships	Jul. 23, 2012 Opnext Trademarks and Other	Nov. 19, 2012 Santa Rosa Thin Film Filter Business and Interleaver Product Line	Jun. 28, 2014 Santa Rosa Thin Film Filter Business and Interleaver Product Line	Jun. 29, 2013 Santa Rosa Thin Film Filter Business and Interleaver Product Line	Jul. 21, 2010 Mintera	Jun. 29, 2013 Mintera	Jun. 30, 2012 Mintera	Jul. 02, 2011 Mintera	Jul. 21, 2010 Mintera	Jun. 30, 2012 Mintera Contingency Scenario One	Jun. 30, 2012 Mintera Contingency Scenario Two	Jul. 21, 2010 Mintera Contract Backlog	Jul. 21, 2010 Mintera Customer Relationships	Jun. 28, 2014 Discontinued Operation	Nov. 01, 2013 Amplifier	Sep. 12, 2013 Amplifier	Jun. 28, 2014 Amplifier	Jun. 29, 2013 Amplifier	Jun. 30, 2012 Amplifier	Nov. 01, 2013 Amplifier	Sep. 12, 2013 Amplifier	Sep. 12, 2013 Zurich	Jun. 28, 2014 Zurich	Jun. 29, 2013 Zurich	Jun. 30, 2012 Zurich	Sep. 12, 2013 Zurich
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items]
Legal and other direct acquisition-related costs in connection with business combination		$ 3,700,000		$ 7,800,000	$ 3,700,000	$ 2,600,000
Total value of consideration																																														88,600,000
Cash proceeds from sale of business																																									79,600,000							90,600,000
Value of consideration subject to hold-back																																														4,000,000						6,000,000
Value of consideration related to an exclusive option																																										5,000,000
Net assets transferred																																															16,200,000		31,400,000
Legal fees																														400,000												3,000,000							4,800,000
Gain on sale of business																																											68,923,000	0	0				61,595,000	(996,000)	(1,469,000)
Receivable in prepaid expense and other current assets		4,445,000		3,012,000	4,445,000																																						4,000,000						6,000,000
Cash proceeds related to settlement of post-closing working capital adjustment																																																				2,900,000
Accounts receivable retained																																																				14,700,000
Supplier and employee related payables retained																																																				9,600,000
Gain on restructuring																														24,800,000													68,923,000	0	0				63,240,000	0	0
Income from discontinued operations related to release of cumulative translation adjustment																																																	3,100,000
Loss from discontinued operations related to interest charges related to settlement of term loan																																								4,800,000
Total cash consideration																												27,000,000
Cash proceeds from sale of business																													1,000,000	26,000,000													84,600,000	0	0				93,545,000	0	0
Property and equipment, net																														900,000														6,555,000						12,749,000
Inventories																														700,000														8,308,000						23,762,000
Other net assets																														200,000
Acquisition date of entity acquired																Jul. 23, 2012															Jul. 21, 2010
Converted issued and outstanding share of common stock																							0.42
Common stock, par value		$ 0.01		$ 0.01	$ 0.01		$ 0.01
Conversion of shares													91,467,739	10,119,340	412,123
Converted shares right to receive													38,416,355	4,250,011	172,970
Percentage of acquisition							57.00%																43.00%
Fair value consideration																							89,842,000												25,600,000
Issuance of common stock																88,742,000
Shares of common stock issued			900,000													38,400,000																				800,000	800,000
Common stock price per share																							$ 2.31
Assumption of stock options and stock appreciation rights to purchase common stock																1,100,000
Change in estimate of fair value of property and equipment																	4,000,000	4,000,000
Decrease in fair value of capital lease obligation																	1,000,000
Other intangible assets									8,700,000	200,000	4,900,000	2,700,000											16,420,000
Acquired finite-lived intangible assets, estimated weighted average useful life									6 years	1 year	11 years	6 years													6 years	11 years	6 years											1 year 6 months	8 years 6 months
Gain on bargain purchase		24,866,000		0	24,866,000	0											24,900,000		39,500,000	0	24,866,000	0
Consideration given for fixed number of shares																$ 0.42
Closing price of common stock																							$ 2.31	$ 4.66
Fair value of vested stock awards																89,800,000
Fair market value of the net assets acquired																114,700,000
Asset sale, initial consideration	3,900,000
Asset sale, potential earnout consideration period	15 months
Proceed from asset sale				2,120,000	26,000,000	3,900,000
Gain on asset sale						1,900,000
Earnout consideration					400,000
Cash paid in acquisition																															10,500,000
Liabilities assumed in acquisition																																		1,500,000
Additional contingency based consideration																																			20,000,000
Decrease in fair value of earnout obligations																																	2,200,000
Contingent consideration revenue earnout period																																				12 months	18 months
Settlement of the obligation, cash paid																																8,600,000				500,000
Obligations fair value																																				2,800,000	2,800,000
Goodwill		$ 0		$ 0	$ 0	$ 10,904,000		$ 10,904,000																											$ 10,900,000