Significant Accounting Policies (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) reporting_unit	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items]
Allowance for doubtful accounts	$ (600,000)	$ (600,000)		$ 0
Number of reporting units | reporting_unit		1
Amounts invoiced and not collected	1,766,000	$ 1,766,000	$ 48,883,000	9,006,000
Deferred cost of sales	247,000	$ 247,000	6,415,000	$ 1,261,000
Group purchasing organization administrative fees (percent)		3.00%
Goodwill impairment	$ 0	$ 0
Patent costs capitalized during the period		$ 200,000	$ 400,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Typical payment period for customers		30 days
Maximum
Finite-Lived Intangible Assets [Line Items]
Typical payment period for customers		60 days