Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets [Line Items]
Other intangible assets, gross	$ 13,385	$ 14,210
Less: Accumulated amortization (Finite-lived intangible assets)	(1,540)	(2,215)
Finite and Indefinite lived intangible assets, net	11,845	11,995
Amortization of Intangible Assets	398	845	$ 825
Other intangible assets, future amortization expense [Abstract]
2016	434
2017	407
2018	405
2019	268
2020	222
Patents [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	492	549
Npt tradename [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,500	1,500
Noncompete agreements [Member]
Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,953	2,599
Horizon tradename [Member]
Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	8,400	8,400
Pool System tradename and trademarks [Member]
Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 1,040	$ 1,162