Segment Reporting - Composition of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer [Line Items]
Revenue	$ 141,690	$ 126,917	$ 272,556	$ 255,013
Colocation
Revenue from External Customer [Line Items]
Revenue	114,298	102,621	221,599	203,835
Connectivity
Revenue from External Customer [Line Items]
Revenue	24,910	22,753	46,796	47,944
Other
Revenue from External Customer [Line Items]
Revenue	$ 2,482	$ 1,543	$ 4,161	$ 3,234