Revenue - Contract Assets and Deferred Revenue Schedule (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Capitalized Contract Cost [Line Items]
Contract assets	[1]	$ 13,969	$ 3,834
Deferred revenue		6,333	5,330
Prepaid Expenses and Other Current Assets [Member]
Capitalized Contract Cost [Line Items]
Contract assets		13,969	3,834
Other Noncurrent Liabilities [Member]
Capitalized Contract Cost [Line Items]
Deferred revenue		$ 43,450	$ 46,922

[1] Contract assets reflect the satisfied performance obligations for which the Company does not yet have an unconditional right to consideration.