Geographic Information - Revenue by Geographic Locations (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) reportable_segment	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | reportable_segment			1
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	$ 191,736	$ 154,305	$ 728,111	$ 403,493
Long-lived assets	1,197,206		1,197,206		$ 1,207,955
India
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	132,919	93,403	553,072	219,953
Long-lived assets	696,334		696,334		698,936
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	38,286	40,124	114,073	123,750
Long-lived assets	375,955		375,955		381,782
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	8,625	8,187	26,997	23,773
Long-lived assets	2,922		2,922		3,581
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	4,087	3,306	12,255	9,836
Long-lived assets	23,701		23,701		22,900
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	3,021	3,633	9,215	11,447
Long-lived assets	13,102		13,102		13,723
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	1,371	1,122	4,117	3,355
Long-lived assets	5,880		5,880		6,930
Singapore
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	756	896	2,950	2,944
Long-lived assets	19,138		19,138		19,336
New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	474	459	1,516	1,277
Long-lived assets	407		407		513
United Arab Emirates
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	1,467	2,568	1,495	2,702
Long-lived assets	54,352		54,352		54,789
Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	395	213	1,222	1,742
Long-lived assets	660		660		661
Indonesia
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	335	394	1,199	2,714
Long-lived assets	92		92		139
Mauritius
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues			0	0
Long-lived assets	4,663		4,663		$ 4,665
Indian Led
Revenues from External Customers and Long-Lived Assets [Line Items]
External Revenues	$ 135,300	$ 96,800	$ 557,800	$ 227,900