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Impact from Thailand Flood	12 Months Ended
Impact from Thailand Flood	Sep. 30, 2015
Extraordinary and Unusual Items [Abstract]
Impact from Thailand Flood	Impact from Thailand Flood In October 2011, we announced that flood waters had severely impacted the inventory and production operations of our primary contract manufacturer in Thailand. The impacted areas included certain product lines for the Digital Products Business and CATV businesses. We rebuilt the impacted production lines at other locations, including an alternative facility of our contract manufacturer in Thailand, as well as our own manufacturing facilities in the United States and China. During the fiscal year ended September 30, 2013, we recorded flood-related insurance proceeds of $7.8 million in the form of forgiveness of $0.2 million of outstanding capital lease obligations, $1.0 million of outstanding payables and $6.6 million in the form of a receivable, which was paid in cash. No additional flood-related insurance proceeds associated with this event are anticipated. See Note 4 - Discontinued Operations for additional information.