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Intangible Assets and Goodwill	12 Months Ended
Intangible Assets and Goodwill	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	4. Intangible Assets and Goodwill As of December 31, 2019 and 2018, the Company had $18.4 million and $0.5 million of intangible assets, respectively. Amortization expense related to intangible assets was $0.8 million, $0.9 million, and $1.1 million for the years ended December 31, 2019, 2018, and 2017, respectively. Goodwill was $0.4 million and $2.1 million for the years ended December 31, 2019 and 2018, respectively.