Goodwill And Other Intangible Assets (Changes In The Carrying Amount Of Goodwill, By Reportable Segment) (Details) $ in Thousands	12 Months Ended
Sep. 30, 2016 USD ($)
Goodwill [Line Items]
Goodwill, Gross	$ 99,140
Goodwill	99,140
Accumulated impairment losses	(64,068)
Goodwill	35,072
Effects of foreign currency - Goodwill	(590)
Effects of foreign currency - Accumulated impairment losses	769
Decrease related to dispositions - Goodwill	(64,743)
Decrease related to dispositions - Accumulated impairment losses	63,299
Goodwill	33,807
Goodwill	33,807
Radiation Measurement [Member]
Goodwill [Line Items]
Goodwill, Gross	11,002
Goodwill	11,002
Goodwill	11,002
Effects of foreign currency - Goodwill	194
Goodwill	11,196
Goodwill	11,196
Medical Physics [Member]
Goodwill [Line Items]
Goodwill, Gross	22,611
Goodwill	22,611
Goodwill	22,611
Goodwill	22,611
Goodwill	22,611
Medical Products [Member]
Goodwill [Line Items]
Goodwill, Gross	65,527
Goodwill	65,527
Accumulated impairment losses	(64,068)
Goodwill	1,459
Effects of foreign currency - Goodwill	(784)
Effects of foreign currency - Accumulated impairment losses	769
Decrease related to dispositions - Goodwill	(64,743)
Decrease related to dispositions - Accumulated impairment losses	$ 63,299

Goodwill, Foreign Currency Translation Impairment Loss

No definition available.

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- Definition

Goodwill, Written off Related to Sale of Business Unit Impairment Loss

+ References

No definition available.

+ Details

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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