Goodwill (Details) - USD ($)	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 5,898,000	$ 6,131,000
Currency translation on Hilger Crystals	42,000	(233,000)
Goodwill, Ending Balance	5,940,000	5,898,000
Contract Research [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	4,939,000	4,939,000
Currency translation on Hilger Crystals	0	0
Goodwill, Ending Balance	4,939,000	4,939,000
Optics [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	959,000	1,192,000
Currency translation on Hilger Crystals	42,000	(233,000)
Goodwill, Ending Balance	$ 1,001,000	$ 959,000