Performance Awards - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized compensation expense	$ 6.0
2014 Equity Incentive Plan | Restricted Cash Award | Minimum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Performance period	1 year
2014 Equity Incentive Plan | Restricted Cash Award | Maximum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Performance period	3 years
2014 Equity Incentive Plan | Performance Awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized compensation expense	$ 2.3