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Property, Plant, and Equipment, Net (Narrative) (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jun. 30, 2015 | Sep. 30, 2014
Construction in progress | $ 216,021 | $ 223,958
Property, Plant and Equipment, Net | 688,336 | 513,279
Second Campus Rockford Illinois [Member] |  |
Construction in progress | 27,633 | 85,283
Capitalized interest | 430 | 2,963
New Campus Fort Collins Colorado [Member] |  |
Construction in progress | 117,882 | 37,268
Capitalized interest | 3,996 | 2,392
Building Site Niles Illinois [Member] |  |
Construction in progress | 4,960 | 55,629
Building and Building Improvements [Member] | Second Campus Rockford Illinois [Member] |  |
Contruction in progress placed into service | 120,000 |
Buildings and improvements and Office furniture and equipment [Member] | Building Site Niles Illinois [Member] |  |
Contruction in progress placed into service | 72,000 |
Assets Held-for-sale [Member] | Land and Building [Member] |  |
Property, Plant and Equipment, Net | $ 692 | $ 2,465

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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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