Business Description and Significant Accounting Policies - Narrative (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($) segment	Sep. 30, 2019 segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Feb. 28, 2021 USD ($)	Oct. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Ownership percentage in subsidiary	100.00%		100.00%
Number of operating segments | segment	2	1
Cash	$ 5,058,000		$ 5,058,000	$ 4,602,000
Current portion of restricted cash	158,000		158,000	0
Long-term restricted cash	61,000		61,000	0
Allowance for doubtful accounts	182,000		182,000	19,000
Inventory reserve	193,000		193,000	0
Current portion deferred revenue	1,217,000		1,217,000	1,901,000
Impairment charges on property and equipment			144,000	63,000
Disposal of fixed assets			3,438,000
Accumulated depreciation of fixed assets disposed			3,287,000
Loss on disposal of fixed assets			(151,000)
Impairment charges on right-of use assets			465,000	0
Impairment charges on goodwill			541,000	2,254,000
Service
Property, Plant and Equipment [Line Items]
Performance obligation	27,000		27,000
Current portion deferred revenue				21,000			$ 32,000
Product
Property, Plant and Equipment [Line Items]
Performance obligation	$ 1,696,000		1,696,000
Deferred revenue, revenue recognized			978,000
Current portion deferred revenue						$ 352,000
Subsequent Event
Property, Plant and Equipment [Line Items]
Letter of credit expired					$ 158,000
Revenue
Property, Plant and Equipment [Line Items]
Excise and sales taxes			313,000	390,000
Cost of Revenue
Property, Plant and Equipment [Line Items]
Excise and sales taxes			$ 328,000	$ 390,000
Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life			3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life			10 years