Fair Value Measurements - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Control Agreements For Interest And Fee Payments
Long Lived Assets Held-for-sale [Line Items]
Restricted cash	$ 24,800,000
Standby Letters of Credit | Line of Credit
Long Lived Assets Held-for-sale [Line Items]
Line of credit facility, maximum borrowing capacity	30,000,000.0
Proceeds from lines of credit	23,100,000
Fair Value, Recurring
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	$ 2,300,000	$ 2,300,000