Revenue Recognition (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) region segment	Dec. 31, 2018 USD ($)
Revenue From Contract With Customer [Abstract]
Capitalized contract costs	$ 1,500,000	$ 7,400,000
Capitalized contract costs, impairment	0	0
Deferred commissions	0	0
Revenue deferred due to unsatisfied performance obligations	14,500,000	14,800,000
Revenue recognized for satisfaction of performance obligations	17,900,000	9,000,000.0
Contract with Customer, Liability Included In Beginning Balance, Revenue Recognized	$ 9,900,000	$ 4,400,000
Number of geographic regions in which the Company conducts business | region	3
Number of operating segments | segment	2
Number of reportable segments | segment	2