Nature of Business and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	$ 13,848	$ 13,848
Finite-lived intangible assets, Accumulated amortization	(8,838)	(8,732)
Finite-lived intangible assets, Net book value	5,010	5,116
Trade name
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	4,048	4,048
Finite-lived intangible assets, Accumulated amortization	(51)
Finite-lived intangible assets, Net book value	3,997	4,048
Customer relationships
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	9,800	9,800
Finite-lived intangible assets, Accumulated amortization	(8,787)	(8,732)
Finite-lived intangible assets, Net book value	$ 1,013	$ 1,068