Inventory Financing - Additional Information (Details) - Line of Credit - Short Term Credit Facility - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Maximum credit under credit agreement	$ 7.5
Termination notice period	90 days
Outstanding borrowings	$ 4.2	$ 3.0
Available credit under credit agreement	0.2
Subordinated note outstanding, minimum limit	$ 1.0
Weighted average interest rate	3.75%	5.25%
Prime Rate
Line of Credit Facility [Line Items]
Variable rate basis	0.50%