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Detail Of Selected Balance Sheet Accounts (Tables) | 9 Months Ended
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Jun. 30, 2013
Detail Of Selected Balance Sheet Accounts [Abstract] |
Activity In Allowance For Doubtful Accounts |
| Three Months Ended |  | Nine Months Ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Balance at beginning of period | $ | 912 |  | $ | 1,043 |  | $ | 1,399 |  | $ | 391
Increase (decrease) to bad debt expense |  | 68 |  |  | (127) |  |  | (310) |  |  | 509
Deductions for uncollectible accounts written off, net of recoveries |  | (54) |  |  | 175 |  |  | (151) |  |  | 175
Increase (decrease) due to foreign currency translation |  | (2) |  |  | 5 |  |  | (14) |  |  | 21
Balance at end of period | $ | 924 |  | $ | 1,096 |  | $ | 924 |  | $ | 1,096
Activity In Product Warranty Accrual |
| Three Months Ended |  | Nine Months Ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Balance at beginning of period | $ | 5,242 |  | $ | 4,783 |  | $ | 5,714 |  | $ | 4,603
Increase to warranty expense |  | 430 |  |  | 752 |  |  | 1,965 |  |  | 2,084
Deduction for warranty charges |  | (874) |  |  | (1,068) |  |  | (2,798) |  |  | (2,254)
Increase (decrease) due to foreign currency translations |  | (7) |  |  | (40) |  |  | (90) |  |  | (6)
Balance at end of period | $ | 4,791 |  | $ | 4,427 |  | $ | 4,791 |  | $ | 4,427
Components Of Inventories |
| June 30, |  | September 30,
| 2013 |  | 2012
Raw materials, parts and subassemblies | $ | 32,694 |  | $ | 33,632
Work-in-progress |  | 4,217 |  |  | 6,422
Provision for excess and obsolete inventory |  | (6,177) |  |  | (7,137)
Total inventories | $ | 30,734 |  | $ | 32,917
Cost And Estimated Earnings On Uncompleted Contracts |
| June 30, |  | September 30,
| 2013 |  | 2012
Costs incurred on uncompleted contracts | $ | 605,097 |  | $ | 635,714
Estimated earnings |  | 147,503 |  |  | 168,480
|  | 752,600 |  |  | 804,194
Less: Billings to date |  | 745,981 |  |  | 754,604
Net underbilled position | $ | 6,619 |  | $ | 49,590
Included in the accompanying balance sheets under the following captions: |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts | $ | 73,806 |  | $ | 86,734
Billings in excess of costs and estimated earnings on uncompleted contracts |  | (67,187) |  |  | (37,144)
Net underbilled position | $ | 6,619 |  | $ | 49,590

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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