Long-Lived Assets - Summary of Carrying Values of Customer Contract Cost Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Gross Carrying Amount	$ 87,131	$ 82,272
Accumulated Amortization	(39,893)	(31,526)
Net Amount	47,238	50,746
Customer contract incentives
Capitalized Contract Cost [Line Items]
Gross Carrying Amount	4,626	4,626
Accumulated Amortization	(2,320)	(1,612)
Net Amount	2,306	3,014
Capitalized costs
Capitalized Contract Cost [Line Items]
Gross Carrying Amount	70,214	68,085
Accumulated Amortization	(33,104)	(26,482)
Net Amount	37,110	41,603
Capitalized commission fees
Capitalized Contract Cost [Line Items]
Gross Carrying Amount	12,291	9,561
Accumulated Amortization	(4,469)	(3,432)
Net Amount	$ 7,822	$ 6,129