Summary of Significant Accounting Policies - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Depreciation										$ 868	$ 368
Goodwill impairment									$ 4,800
Goodwill, purchase accounting adjustments										100
Advertising expense										$ 500	$ 600
Revenues	$ 12,239	$ 12,022	$ 11,959	$ 13,962	$ 17,859	$ 17,559	$ 12,890	$ 6,810
Minimum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset, useful life										3 years
Maximum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset, useful life										10 years
Software and Software Development Costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life										3 years
Office Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life										5 years
Warehouse and Service Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life										7 years
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life										10 years