Summary of Significant Accounting Policies - Additional Information (Details)			3 Months Ended		12 Months Ended
	Mar. 27, 2020 USD ($)	Mar. 26, 2020	Mar. 31, 2020 USD ($) segment shares	Mar. 31, 2019 USD ($) shares	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Significant Accounting Policies [Line Items]
Number of Reportable Segments | segment			1
Options and warrants excluded from the calculation of diluted shares | shares			7,042,377	4,673,897
Production and importation permission description			22 million pounds in 2015 and was reduced by approximately 4.5 million pounds each year and ended at zero in 2020.
Operating Loss Carryforwards			$ 47,400,000
Annual limitation of NOLs			1,300,000
Deferred Tax Assets, Valuation Allowance							$ 11,300,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			18,500,000
Goodwill impairment loss			0		$ 0
Cylinder deposit liability			10,000,000		9,500,000
Operating Lease, Right-of-Use Asset			7,573,000		$ 8,048,000
No Expiration [Member]
Significant Accounting Policies [Line Items]
Operating Loss Carryforwards			42,000,000
Expiration Through 2023
Significant Accounting Policies [Line Items]
Operating Loss Carryforwards			5,400,000
State and Local Jurisdiction [Member]
Significant Accounting Policies [Line Items]
Operating Loss Carryforwards			$ 25,300,000
Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
Operating Lease, Right-of-Use Asset						$ 8,100,000
Customer Concentration Risk [Member] | One Customer | Revenue from Contract with Customer [Member]
Significant Accounting Policies [Line Items]
Concentration Risk, Percentage			13.00%	15.00%
Customer Concentration Risk [Member] | One Customer | Accounts Receivable
Significant Accounting Policies [Line Items]
Accounts Receivable, net			$ 2,700,000	$ 3,000,000
CARES Act
Significant Accounting Policies [Line Items]
Percent of taxable income offset for taxable years beginning before 2021	100.00%
Preliminary tax benefit related to the alternative minimum tax refund			47,000
Percent of adjusted taxable income	50.00%	30.00%
Increase in allowable interest expense	$ 470,000
Operating Loss Carryforwards			$ 470,000