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v3.19.1

Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 30, 2015 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Impairment of Long-Lived Assets |  |  |  |
Impairment of long-lived assets |  | $ 0.0 | $ 0.0 | $ 0.0
Machinery and equipment | Minimum |  |  |  |
Property, plant and equipment |  |  |  |
Useful life |  | 7 years |  |
Machinery and equipment | Maximum |  |  |  |
Property, plant and equipment |  |  |  |
Useful life |  | 10 years |  |
Beverly Property Owner LLC | Sale leaseback obligation | Land and buildings |  |  |  |
Property, plant and equipment |  |  |  |
Lease term | 22 years |  |  |

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