Geographic Information - Revenue by Geographic Locations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) reportable_segment	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | reportable_segment	1
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	$ 290,053	$ 137,876
Long-lived assets	1,205,059		$ 1,207,955
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	231,541	73,915
Long-lived assets	700,315		698,936
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	38,066	41,912
Long-lived assets	380,078		381,782
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	9,684	8,186
Long-lived assets	3,375		3,581
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	3,098	4,237
Long-lived assets	12,543		13,723
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	4,104	3,281
Long-lived assets	22,876		22,900
Indonesia
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	405	2,142
Long-lived assets	120		139
Singapore
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	1,069	1,253
Long-lived assets	19,279		19,336
Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	444	1,276
Long-lived assets	695		661
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	1,150	1,114
Long-lived assets	5,993		6,930
New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	492	435
Long-lived assets	476		513
United Arab Emirates
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	0	125
Long-lived assets	54,646		54,789
Mauritius
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	0	0
Long-lived assets	4,663		$ 4,665
Indian Led
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating revenue	$ 232,600	$ 77,900