Summary of Significant Accounting Policies - Impairment of Long-Lived and Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2019
Patents
Impairment of Long-Lived and Intangible Assets
Estimated useful lives of assets	20 years
Minimum | Proprietary Technology
Impairment of Long-Lived and Intangible Assets
Estimated useful lives of assets	3 years
Minimum | Customer relationships
Impairment of Long-Lived and Intangible Assets
Estimated useful lives of assets	5 years
Maximum | Proprietary Technology
Impairment of Long-Lived and Intangible Assets
Estimated useful lives of assets	7 years
Maximum | Customer relationships
Impairment of Long-Lived and Intangible Assets
Estimated useful lives of assets	12 years