Discontinued Operations - Components of Loss by Business (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2015
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
(Loss) gain from discontinued operations                   $ (167) $ (1,571) $ (368)
(Loss) gain on disposal of discontinued operations                   (534) (30) 3,915
(Loss) gain from discontinued operations before income taxes                   (701) (1,601) 3,547
(Benefit from) provision for income taxes                   (10) (2) 1
(Loss) income from discontinued operations   $ (373) $ (142) $ (81) $ (95) $ (685) $ (659) $ (238) $ (17) (691) (1,599) 3,546
CLL                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
(Loss) gain from discontinued operations                   (138) (1,020) (174)
(Loss) gain on disposal of discontinued operations $ (44)                 (44) 0 0
EFLS                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
(Loss) gain from discontinued operations                   (29) (531) (866)
Pool products business                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
(Loss) gain from discontinued operations                   0 (20) 672
(Loss) gain on disposal of discontinued operations                   $ (490) $ (30) $ 3,915