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