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Aclara Divestiture (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 15, 2015 | Mar. 28, 2014 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Net sales |  |  | $ 153,612 | $ 134,191 | $ 128,941 | $ 120,547 | $ 151,413 | $ 130,495 | $ 124,762 | $ 124,450 | $ 537,291 | $ 531,120 | $ 490,079
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total |  |  |  |  |  |  |  |  |  |  | 776 | (52,061) | 0
Discontinued Operation Loss on Disposal of Discontinued Operation |  |  |  |  |  |  |  |  |  |  |  | 15,600 |
Aclara Technologies LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax |  |  |  |  |  |  |  |  |  |  | $ 1,200 | (48,200) | (62,100)
Net sales |  |  |  |  |  |  |  |  |  |  |  | 129,600 | 184,500
Proceeds from Divestiture of Businesses, Net of Cash Divested, Total |  | $ 135,000 |  |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total |  |  |  |  |  |  |  |  |  |  |  | $ 63,800 | $ 48,000
Repayments of Other Debt | $ 2,300 |  |  |  |  |  |  |  |  |  |  |  |

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