Segment and Geographic Information - Summary of Geographic information (Details) - USD ($) $ in Thousands		3 Months Ended									9 Months Ended		12 Months Ended
	Mar. 31, 2019	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 19, 2019	Mar. 19, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Revenues:
REVENUES	$ 19,014	$ 3,831	$ 1,789	$ 998	$ 114,307	$ 139,436	$ 144,901	$ 140,430	$ 118,452	$ 118,452	$ 443,781	$ 443,781	$ 120,925	$ 540,778
Property and equipment, net:
Property and equipment, net		17,056				22,741					22,741	22,741	17,056
U.S. [Member]
Revenues:
REVENUES										6,008		25,950	11,585	27,166
Property and equipment, net:
Property and equipment, net		7,145				9,965					9,965	9,965	7,145
Not connected to a country [Member]
Revenues:
REVENUES										106,886		399,675	102,420	491,244
Property and equipment, net:
Property and equipment, net		6,242				6,826					6,826	6,826	6,242
Other [Member]
Revenues:
REVENUES										$ 5,558		18,156	6,920	$ 22,368
Property and equipment, net:
Property and equipment, net		$ 3,669				$ 5,950					$ 5,950	$ 5,950	$ 3,669