Nature of Business and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	$ 13,848	$ 15,700
Finite-lived intangible assets, Accumulated amortization	(8,732)	(8,468)
Finite-lived intangible assets, Net book value	5,116	7,232
Trade name
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, Carrying value	4,048	5,900
Finite-lived intangible assets, Accumulated amortization	0	0
Finite-lived intangible assets, Net book value	4,048	5,900
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	(8,732)	(8,468)
Finite-lived intangible assets, Net book value	$ 1,068	$ 1,332