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Summary of Significant Accounting Policies - Property Plant and Equipment (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) Year | Dec. 31, 2015 USD ($)
Property, Plant and Equipment [Line Items] |  |
Unamortized software development costs | $ | $ 477,670 | $ 433,146
Building [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 20 |
Property, Plant and Equipment, Maximum Useful Life | 30 |
Machinery and Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 3 |
Property, Plant and Equipment, Maximum Useful Life | 10 |
Computer Software, Intangible Asset [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Minimum Useful Life | 3 |
Property, Plant and Equipment, Maximum Useful Life | 12 |

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- Details
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- Details
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