Restructuring - Activity Related to the Restructuring Liabilities (Details) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Restructuring Reserve [Roll Forward]
Restructuring	$ 0	$ 0	$ (1,362,000)
Consolidation of facilities
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	0	27,000	2,644,000
Restructuring	0	0	135,000
Cash payments		(27,000)	(1,284,000)
Other			(1,468,000)
Restructuring reserve, period ending		0	27,000
Consolidation of facilities | Severance and Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	0	7,000	0
Restructuring			146,000
Cash payments		(7,000)	(139,000)
Other			0
Restructuring reserve, period ending		0	7,000
Consolidation of facilities | Facility Exit Costs and Asset Impairment
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning of period	$ 0	20,000	2,644,000
Restructuring			(11,000)
Cash payments		(20,000)	(1,145,000)
Other		(1,500,000)	(1,468,000)
Restructuring reserve, period ending		$ 0	$ 20,000