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Discontinued Operations - Narrative (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Feb. 18, 2015
Aug. 31, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Nov. 26, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Loss on disposal of discontinued operations     $ (89,000) $ 0 $ (161,000) $ 0  
Reclassification adjustment for foreign currency translation adjustments     (460,000) 0 (469,000) 0  
Remaining in escrow subject to resolution of claims     300,000 300,000 300,000 300,000  
Indemnification Agreement [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Buyer's claim of damages $ 1,600,000            
Crescent Lighting Limited [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Loss on disposal of discontinued operations     (44,000) $ 0 (44,000) $ 0  
Reclassification adjustment for foreign currency translation adjustments   $ (469,000)          
Pool and Commercial Products [Member]              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Sale price             $ 5,200,000
Escrow deposit             $ 500,000
Remaining in escrow subject to resolution of claims     $ 300,000   $ 300,000