Summary of Significant Accounting Policies (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) segment reportingunit	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Cash equivalents	$ 0		$ 0
Inventory valuation reserves	500,000		300,000
Sales, general and administrative	$ 18,984,000	$ 16,056,000
Product return period	15 days
Valuation allowances and reserves, amount	$ 44,000		36,000
Product shelf life	5 years
Estimated useful lives	P50Y
Number of reportable segments | segment	1
Number of reporting units | reportingunit	1
Goodwill and intangible asset impairment		0
Asset impairment charges	$ 0		0
Foreign currency transaction gain (loss)	$ (6,200,000)	(400,000)
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	P5Y
Estimated useful lives	2 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	P10Y
Estimated useful lives	15 years
Shipping and Handling
Summary Of Significant Accounting Policies [Line Items]
Sales, general and administrative	$ 800,000	700,000
Product Concentration Risk | NuSil Technology LLC
Summary Of Significant Accounting Policies [Line Items]
Purchases from suppliers	5,000,000	$ 3,700,000
Outstanding balance owed	$ 600,000		$ 2,700,000
Revenue | Geographic Concentration Risk | Brazil
Summary Of Significant Accounting Policies [Line Items]
Concentration risk (as a percent)	10.00%	17.70%
Purchases | Product Concentration Risk
Summary Of Significant Accounting Policies [Line Items]
Concentration risk (as a percent)	64.90%	62.90%
Customer One | Customer concentration risk
Summary Of Significant Accounting Policies [Line Items]
Concentration risk (as a percent)	12.00%		10.20%
Customer Two | Customer concentration risk
Summary Of Significant Accounting Policies [Line Items]
Concentration risk (as a percent)	11.00%