Goodwill And Other Intangible Assets (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2013 USD ($)	Sep. 30, 2016 USD ($) segment	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reportable segments | segment		3
Goodwill and other intangible assets impairment charge				$ 62,188
Accumulated Intangibles Impairment Charge			$ 20,820
Accumulated Amortization		11,772	38,662
Goodwill		33,807	35,072
Amortization expense		1,969	2,243	3,978
Amortization expense next fiscal year		1,099
Amortization expense year two		1,099
Amortization expense year three		980
Amortization expense year four		860
Amortization expense year five		860
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Accumulated Intangibles Impairment Charge			18,657
Accumulated Amortization		10,436	33,716
Radiation Measurement [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill		11,196	11,002
Medical Physics [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill and other intangible assets impairment charge				62,200
Goodwill		$ 22,611	22,611
Medical Products [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill and other intangible assets impairment charge				62,188
Goodwill impairment charge	$ 22,700			41,400
Accumulated Intangibles Impairment Charge				20,800
Goodwill impairment charge tax benefit	$ 8,500			15,300
Intangibles Impairment Charge tax benefit				$ 7,700
Goodwill			$ 1,459
Minimum [Member] | Radiation Measurement, Medical Physics And Medical Products [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Discount rate		9.00%
Maximum [Member] | Radiation Measurement, Medical Physics And Medical Products [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Discount rate		10.00%