Summary of Significant Accounting Policies - Receivable, Inventory, And Intangible Assets (Details) - USD ($)
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12 Months Ended |
|
Dec. 31, 2016 |
Dec. 31, 2015 |
| Accounts Receivable |
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| Minimum number of days after an invoice is issued when accounts receivable is considered due |
30 days
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| Maximum number of days after an invoice is issued when accounts receivable is considered due |
60 days
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|
| Allowance for doubtful accounts receivable |
$ 0
|
$ 0
|
| Minimum |
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| Intangible Assets |
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| Intangible asset useful lives |
5 years
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|
| Maximum |
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|
| Intangible Assets |
|
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| Intangible asset useful lives |
10 years
|
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| Buildings. |
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| Property, Plant and Equipment. |
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|
| Estimated useful life |
20 years
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| Building improvements | Minimum |
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| Property, Plant and Equipment. |
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| Estimated useful life |
5 years
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| Building improvements | Maximum |
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|
| Property, Plant and Equipment. |
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|
| Estimated useful life |
20 years
|
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| Software, machinery and equipment | Minimum |
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| Property, Plant and Equipment. |
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|
| Estimated useful life |
1 year
|
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| Software, machinery and equipment | Maximum |
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| Property, Plant and Equipment. |
|
|
| Estimated useful life |
15 years
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