Description of Business and Summary of Significant Accounting Policies Description of Business and Summary of Significant Accounting Policies - Costs to Obtain and Fulfill a Contract (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Capitalized contract costs, net, current			$ 734	$ 862
Capitalized contract costs, net, noncurrent			1,200
Contract with Customer, Asset, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 1,897	$ 2,238	$ 1,897	$ 2,238	$ 2,401
Costs recognized from adjusted beginning balance	(708)	(898)
Additions, net of costs recognized	367	735
Balance, end of period	$ 1,897	$ 2,238