Selected Balance Sheet Accounts (Details Narrative) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Amortization expense	$ 0.4	$ 0.7	$ 0.8	$ 1.6
Lump sum payment			$ 0.5
Accounts Receivable
Concentration of credit risk			64.00%	60.00%
Gross accounts receivable			$ 9.7	$ 8.9
Revenue Benchmark
Concentration of credit risk			46.00%	45.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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