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Discontinued Operations - Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended 21 Months Ended
Mar. 25, 2014
Aug. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Nov. 26, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Loss on sale of discontinued operations     $ (12) $ (534) $ (30)    
Cash held in escrow     0 0 300 $ 0  
Crescent Lighting Limited (CLL)              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Loss on sale of discontinued operations   $ (44) 0 (44) 0    
Accumulated other comprehensive income reclassification adjustment for foreign currency translation adjustment   $ (469)          
Pool products              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Proceeds from sale             $ 5,200
Non-compete period 5 years            
Cash held in escrow     $ 300 $ 300 $ 300 300 $ 500
Escrow releases $ 100         $ 200  
Number of additional months to receive payments 4 months