Geographic and Segment Information - Additional Information (Detail)
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3 Months Ended |
9 Months Ended |
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Sep. 30, 2016
Customer
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Sep. 30, 2015
Customer
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Jun. 30, 2015
Segments
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Mar. 31, 2015
Segments
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Sep. 30, 2016
Customer
Segments
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Sep. 30, 2015
Customer
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Number of operating segments | Segments |
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2
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2
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| As Previously Reported [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Number of operating segments | Segments |
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1
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| Customer Concentration Risk [Member] | Net Sales [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Number of customers greater than ten percent threshold | Customer |
2
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2
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2
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2
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| Customer Concentration Risk [Member] | Net Sales [Member] | Top Ten Customers [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Concentration risk, percentage |
69.00%
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61.00%
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65.00%
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64.00%
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| Number of customers | Customer |
10
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10
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10
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10
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| Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer One [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Concentration risk, percentage |
27.80%
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14.70%
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25.60%
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15.00%
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| Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer Two [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Concentration risk, percentage |
11.20%
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10.10%
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11.10%
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10.90%
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| Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | Korea [Member] |
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
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| Concentration risk, percentage |
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96.00%
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