Segment Information - Disaggregation of Revenue By Geographical Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenues, net	$ 120,310	$ 178,057	$ 325,003	$ 343,928
Domestic
Segment Reporting Information [Line Items]
Revenues, net	119,212	174,109	321,045	338,243
Foreign
Segment Reporting Information [Line Items]
Revenues, net	$ 1,098	$ 3,948	$ 3,958	$ 5,685
Geographic Concentration Risk | Net Revenue
Segment Reporting Information [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Geographic Concentration Risk | Net Revenue | Domestic
Segment Reporting Information [Line Items]
Concentration risk percentage	99.10%	97.80%	98.80%	98.30%
Geographic Concentration Risk | Net Revenue | Foreign
Segment Reporting Information [Line Items]
Concentration risk percentage	0.90%	2.20%	1.20%	1.70%