Related Party Transactions (Details) - Polsinelli - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Related Party Transaction [Line Items]
Legal services obtained	$ 0.6	$ 1.8	$ 2.2	$ 3.3
Accounts payable for legal services	$ 0.2	$ 1.2	$ 0.2	$ 1.2

Amount for accounts payable to related parties.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant