Company Overview and Basis of Presentation - Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Related party expenses	$ 1.5	$ 0.8	$ 1.0
Maximum \| Customer Concentration Risk \| Sales Revenue, Net
Related Party Transaction [Line Items]
Substantial stockholder revenue percentage	1.00%	1.00%	1.00%
Substantial Stockholder
Related Party Transaction [Line Items]
Revenue	$ 1.7	$ 2.1	$ 1.8

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Costs of sales and operating expenses for the period incurred from transactions with related parties.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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