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Network
2410407 - Disclosure - Accrued Expenses and Other Current Liabilities (Schedule of Product Warranty Accruals) (Details)
(http://www.emcore.com/role/AccruedExpensesAndOtherCurrentLiabilitiesScheduleOfProductWarrantyAccrualsDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000808326 (http://www.sec.gov/CIK)
Payables and Accruals [Abstract]Period [Axis]
2015-10-01 - 2016-09-30
2014-10-01 - 2015-09-30
2013-10-01 - 2014-09-30
Payables and Accruals [Abstract]
 
 
 
Movement in Standard Product Warranty Accrual [Roll Forward]
 
 
 
Balance at beginning of period
1,664,000  
2,816,000  
3,881,000  
Provision for product warranty - expense
376,000  
838,000  
1,308,000  
Adjustments and utilization of warranty accrual
(1,169,000) 
(1,990,000) 
(2,373,000) 
Balance at end of period
871,000  
 
1,664,000  
 
2,816,000