Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets [Line Items]
Other intangible assets, net	$ 11,038	$ 12,004
Total other intangible assets, gross	15,971	16,394
Amortization of Intangible Assets	1,000	1,100	$ 1,000
Other intangible assets, future amortization expense [Abstract]
2020	856
2021	298
2022	108
2023	75
2024	75
National Pool Tile (NPT) tradename
Intangible Assets [Line Items]
Intangibles Gross	1,500	1,500
Accumulated Amortization	(887)	(812)
Intangibles Net	$ 613	688
Weighted Average Useful Life	20 years
Non-compete agreements
Intangible Assets [Line Items]
Intangibles Gross	$ 4,611	5,019
Accumulated Amortization	(3,576)	(3,157)
Intangibles Net	$ 1,035	1,862
Weighted Average Useful Life	4 years 10 months 6 days
Patents
Intangible Assets [Line Items]
Intangibles Gross	$ 470	473
Accumulated Amortization	(470)	(421)
Intangibles Net	$ 0	52
Weighted Average Useful Life	5 years
Total other intangibles
Intangible Assets [Line Items]
Accumulated Amortization	$ (4,933)	(4,390)
Horizon tradename
Intangible Assets [Line Items]
Acquired Indefinite-lived Intangibles	8,400	8,400
Pool Systems tradename and trademarks
Intangible Assets [Line Items]
Acquired Indefinite-lived Intangibles	$ 990	$ 1,002