Inventory Financing - Additional Information (Details) - Line of Credit - Short Term Credit Facility - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Maximum credit under credit agreement	$ 7.5
Termination notice period	90 days
Outstanding borrowings	$ 3.7	$ 3.0
Available credit under credit agreement	0.3
Subordinated note outstanding, minimum limit	$ 1.0
Weighted average interest rate	5.25%	5.25%
Prime Rate
Line of Credit Facility [Line Items]
Variable rate basis	0.50%