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EMPLOYEE STOCK PLANS - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 0 Months Ended
Mar. 28, 2015
Oct. 22, 2013
Jul. 31, 2012
Jul. 31, 2011
Aug. 31, 2014
Mar. 31, 2014
Dec. 27, 2014
Feb. 28, 2014
Mar. 29, 2014
Sep. 30, 2014
Jan. 14, 2014
Jul. 30, 2014
Mar. 27, 2015
Jun. 28, 2014
Oct. 31, 2013
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Stock awards, additional shares approved for grant 6,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized                            
Number of shares Issued under the ESPP 9,011,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant                         5,703,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant  
Performance stock units, grants outstanding (in shares) 164,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross                            
Closing price of common stock (in usd per share)                         $ 1.95oclr_ClosingStockPriceUsedInPreTaxIntrinsicValue    
Less than 0.1 million shares of common stock subject to in-the-money options (in shares) 100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber                            
Restricted Stock Awards / Units Outstanding                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Stocks granted (in shares) 2,953,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= oclr_RestrictedStockAwardsAndUnitsMember
                           
Units outstanding after adjustments (in shares) 4,554,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= oclr_RestrictedStockAwardsAndUnitsMember
                        4,273,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= oclr_RestrictedStockAwardsAndUnitsMember
 
Performance Shares                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period   2 years                          
Stock awards, additional shares approved for grant     600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                       
Granted performance stock units (in shares)       200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                     
Aggregate estimated grant date fair value of PSU       $ 0.9oclr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedEstimatedGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                     
Achievement of performance condition associated with PSUs                             100.00%oclr_PercentageOfTargetAchievable
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
Performance stock units, grants outstanding (in shares)   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                         
Performance stock units vesting percentage upon meeting service conditions   50.00%oclr_VestingPercentageRelativeToTarget
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                         
Performance stock units, vesting percentage   50.00%oclr_VestingOfPerformanceBasedUnitsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                         
Forfeited PSUs during period (in shares)     400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
                       
Performance Shares | Certain Executive Officers                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Granted performance stock units (in shares)         500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                 
Aggregate estimated grant date fair value of PSU         0.9oclr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedEstimatedGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
0.5oclr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedEstimatedGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                 
Units outstanding after adjustments (in shares) 100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                           
Aggregate estimated grant date fair value of PSUs outstanding 0.4oclr_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsNonvestedGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                           
Reversal of previously recognized stock-based compensation expense             0.1oclr_ReversalofAllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
               
RSUs | Chief Executive Officer                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Stocks granted (in shares)               800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
             
Aggregate grant date fair value                 $ 2.0us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
           
RSUs | Certain Executive Officers                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period         3 years                    
Granted performance stock units (in shares)         400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                   
RSUs | Employees                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period                   2 years          
Granted performance stock units (in shares)                   1,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= oclr_EmployeesMember
         
Minimum | Stock Options                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period 2 years                            
Minimum | Restricted Stock Awards / Units Outstanding                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period 1 year                            
Maximum | Stock Options                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period 4 years                            
Maximum | Restricted Stock Awards / Units Outstanding                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period 4 years                            
Maximum | Performance Shares | Certain Executive Officers                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Performance stock units, vesting percentage         100.00%oclr_VestingOfPerformanceBasedUnitsPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
                   
Fourth Amended and Restated 2001 Long-Term Stock Incentive Plan                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Award vesting period                     10 years        
Issuance of awards other than stock options being counted (in shares)                     1.25oclr_EquivalentOfAwardsOtherThanStockOptionsForPurposeOfShareLimit
/ us-gaap_PlanNameAxis
= oclr_FourthAmendedandRestated2001LongTermStockIncentivePlanMember
       
Fifth Amended and Restated 2001 Long-Term Stock Incentive Plan                              
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                              
Issuance of awards other than stock options being counted (in shares)                       1.40oclr_EquivalentOfAwardsOtherThanStockOptionsForPurposeOfShareLimit
/ us-gaap_PlanNameAxis
= oclr_FifthAmendedandRestated2001LongTermStockIncentivePlanMember
     
Stock awards, additional shares approved for grant                       6,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= oclr_FifthAmendedandRestated2001LongTermStockIncentivePlanMember