Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Property Plant and Equipment (Details)

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Summary of Significant Accounting Policies - Property Plant and Equipment (Details)
12 Months Ended
Dec. 31, 2016
Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful life 15 years
Machinery and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 5 years
Machinery and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 7 years
Computer systems and software (included in Machinery and Equipment in note 5, Property and Equipment) | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3 years
Computer systems and software (included in Machinery and Equipment in note 5, Property and Equipment) | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 5 years