Organization and Summary of Significant Accounting Policies - Goodwill and Other Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Other Intangible Assets, Net
Goodwill impairment	$ 0.0	$ 0.0	$ 53.3
Impairment of intangible assets	0.0
Trade name
Goodwill and Other Intangible Assets, Net
Impairment of intangible assets	$ 0.0	$ 0.2	$ 1.4