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Summary of Significant Accounting Policies (Goodwill) (Details) $ in Thousands | Jun. 30, 2014 USD ($) industry | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($) | Sep. 30, 2012 USD ($)
--- | --- | --- | --- | --- | --- | ---
Goodwill [Line Items] |  |  |  |  |  |
Target companies equity benchmark | 50.00% |  |  |  |  |
Number of industries encompasses similar products | industry | 3 |  |  |  |  |
Control premium percent | 35.00% |  |  |  |  |
Market Capitalization | $ 235,800 |  | $ 238,600 |  |  |
Carrying value | $ 273,010 | $ 274,938 | $ 270,643 | $ 265,298 | $ 274,243 | $ 270,834
Percent fair value in excess of carrying value of goodwill | 17.00% |  | 19.00% |  |  |
Minimum |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Control premium percent | 30.00% |  |  |  |  |
Maximum |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Control premium percent | 40.00% |  |  |  |  |

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- Definition Percentage above fair value that an investor seeking to acquire control of an entity will pay, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E + Details
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