Description of Business and Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2020 USD ($) segment financial_institution	Sep. 30, 2019 USD ($)	Dec. 31, 2019 financial_institution
Schedule of Accounting Policies [Line Items]
Renewal term	1 year
Number of reportable segments | segment	2
Amortization period of inventories and supplies	24 months
Goodwill and intangible asset impairment | $	$ 0	$ 0
Number of financial institutions holding cash and cash equivalents and marketable securities | financial_institution	1		1
Minimum
Schedule of Accounting Policies [Line Items]
Cancellation notice period	30 days
Initial period preceding cancellation notice	60 days
Typical maturity	1 year
Maximum
Schedule of Accounting Policies [Line Items]
Cancellation notice period	90 days
Initial period preceding cancellation notice	120 days
Typical maturity	3 years