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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jan. 01, 2021
Revenue from External Customer [Line Items]
Capital leases	$ 19,800		$ 19,800
Asset impairment	$ 0	$ 657	$ 0	$ 657
Assets Leased to Others
Revenue from External Customer [Line Items]
Asset impairment		$ 700		$ 700
Forecast \| Minimum
Revenue from External Customer [Line Items]
ROU assets					$ 8,000
Operating lease liability					8,000
Forecast \| Maximum
Revenue from External Customer [Line Items]
ROU assets					10,000
Operating lease liability					$ 10,000