Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014 segment	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reportable segments					3
Goodwill and intangible asset impairment charge	$ 62,188,000	$ 22,700,000	$ 62,188,000	$ 22,700,000	$ 62,188,000	$ 22,700,000
Intangibles Impairment Charge					20,820,000
Discount rate					11.00%
Goodwill	44,645,000	83,833,000	44,645,000	83,833,000	43,218,000	84,436,000	106,717,000	86,384,000	86,529,000	106,746,000	107,001,000
Amortization expense					3,978,000	4,095,000	3,270,000
Amortization expense next fiscal year					1,779,000
Amortization expense year two					1,779,000
Amortization expense year three					1,779,000
Amortization expense year four					1,654,000
Amortization expense year five					1,139,000
Tradenames [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Business acquisition, intangible assets with finite lives					0	0
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangibles Impairment Charge					18,657,000
Business acquisition, intangible assets with finite lives					711,000	2,485,000
Radiation Measurement [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill					18,961,000	20,456,000	20,037,000
Medical Physics [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Discount rate					12.00%
Goodwill					22,611,000	22,611,000	22,611,000
Medical Products [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reportable segments					2
Goodwill and intangible asset impairment charge					62,188,000
Goodwill impairment charge					41,368,000
Intangibles Impairment Charge					20,820,000
Goodwill impairment charge tax benefit					15,306,000
Intangibles Impairment Charge tax benefit					7,703,000
Goodwill					1,646,000	41,369,000	64,069,000
Radiation Measurement And Medical Physics [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reportable segments					1
IZI Medical Products [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible asset impairment charge		22,700,000
Intangibles Impairment Charge					20,820,000
Impairment charge tax benefit					7,703,000
Goodwill charge tax benefit		8,456,000
Goodwill					$ 43,218,000	$ 84,436,000