Goodwill (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Sep. 30, 2013
Goodwill [Line Items]
Goodwill, Impairment Loss, before tax	$ 4.0	$ 2.3
Hilger Crystals [Member]
Goodwill [Line Items]
Percentage Increase In Carrying Value Of Unit		20.00%
Weighted Average Cost Of Capital		16.00%
Long Term Growth Rate		3.00%
Radiation Monitoring Devices [Member]
Goodwill [Line Items]
Percentage Increase In Carrying Value Of Unit		20.00%
Weighted Average Cost Of Capital		13.00%
Long Term Growth Rate		3.00%