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Detail of Selected Balance Sheet Accounts (Cost and Estimated Earnings on Uncompleted Contracts) (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Sep. 30, 2014
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Balance Sheet Related Disclosures [Abstract] |  |
Costs incurred on uncompleted contracts | $ 912,237 | $ 604,939
Estimated earnings | 271,640 | 157,562
Total | 1,183,877 | 762,501
Less: Billings to date | (1,121,141) | (715,233)
Net underbilled position | 62,736 | 47,268
Included in the accompanying balance sheets under the following captions: |  |
Costs and estimated earnings in excess of billings on uncompleted contracts – underbilled | 104,793 | 95,970
Billings in excess of costs and estimated earnings on uncompleted contracts – overbilled | (42,057) | (48,702)
Net underbilled position | $ 62,736 | $ 47,268

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- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51671739&loc=d3e57795-111642 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 210.5-02.3(c)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=51671739&loc=d3e57807-111642 + Details
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