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Goodwill and Intangible Assets - Goodwill RollForward (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
GoodwillRollForward    
Goodwill, Beginning Balance $ 14,993 $ 13,924
Acquisitions 2,256  
Goodwill Purchase Accounting Adjustments   1,069
Goodwill, Ending Balance 17,249 14,993
Residential [Member]    
GoodwillRollForward    
Goodwill, Beginning Balance 8,631 8,631
Acquisitions 0  
Goodwill Purchase Accounting Adjustments   0
Goodwill, Ending Balance 8,631 8,631
MISCOR [Member]    
GoodwillRollForward    
Goodwill, Beginning Balance 6,362 5,293
Acquisitions 2,256  
Goodwill Purchase Accounting Adjustments   1,069
Goodwill, Ending Balance $ 8,618 $ 6,362