Significant Accounting Policies - Narrative (Details)	3 Months Ended			12 Months Ended
	Mar. 31, 2021 USD ($) reportingUnit	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Allowance for doubtful accounts	$ (700,000)			$ (700,000)
Number of reporting units | reportingUnit	1
Goodwill impairment			$ 0
Group purchasing organization administrative fees (as a percent)	3.00%
Deferred cost of sales	$ 100,000			$ 200,000
Capitalized patent costs	$ 200,000	$ 100,000
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