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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Number of shares authorized for issuance under share-based payment arrangement.

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Number of shares issued under share-based payment arrangement.

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Compensation Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Compensation Plans (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity-Based Compensation (Textual)
Unrecognized compensation expense related to unvested stock options			$ 3.4
Unrecognized compensation expense, weighted-average period			3 years 4 months 24 days
Share-based Payment Arrangement, Compensation Expense Related To Forfeitures	$ 2.0		$ 2.7
Unrecognized compensation expense related to unvested common units			$ 1.0
Unrecognized compensation expense related to unvested common units weighted-average period			1 year 10 months 24 days
Equity Incentive Plan
Equity-Based Compensation (Textual)
Number of shares authorized (in shares)	5,000,000		5,000,000
Employee Stock \| Stock option
Equity-Based Compensation (Textual)
Share-based payment arrangement, expense	$ 0.5	$ 0.3	$ 1.2	$ 0.6
Common Stock
Equity-Based Compensation (Textual)
Share-based payment arrangement, expense	0.5	$ 1.2	1.7	$ 5.5
Share-based compensation expense, including forfeitures	$ 1.5		$ 1.0
Restricted Stock
Equity-Based Compensation (Textual)
Number of shares issued (in shares)	15,000