Note 6 - Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Net Sales by Segment
	Year Ended December 31, 2018
Product Classes	Domestic		International		Total
Residential products	$	990,631	$	52,108	$	1,042,739
Commercial & industrial products		464,066		356,204		820,270
Other		125,628		34,827		160,455
Total net sales	$	1,580,325	$	443,139	$	2,023,464

	Year Ended December 31, 2017
Product Classes	Domestic		International		Total
Residential products	$	815,125	$	55,365	$	870,490
Commercial & industrial products		385,575		298,778		684,353
Other		102,806		21,724		124,530
Total net sales	$	1,303,506	$	375,867	$	1,679,373

	Year Ended December 31, 2016
Product Classes	Domestic		International		Total
Residential products	$	730,288	$	38,888	$	769,176
Commercial & industrial products		346,094		212,374		558,468
Other		100,467		19,632		120,099
Total net sales	$	1,176,849	$	270,894	$	1,447,743

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Adjusted EBITDA
	Year Ended December 31,
	2018			2017			2016
Domestic	$	388,685		$	290,290		$	259,563
International		35,867			27,010			16,959
Total adjusted EBITDA	$	424,552		$	317,300		$	276,522
Interest expense		(40,956	)		(42,667	)		(44,568	)
Depreciation and amortization		(47,408	)		(51,988	)		(54,418	)
Non-cash write-down and other adjustments (1)		(3,532	)		(2,923	)		(357	)
Non-cash share-based compensation expense (2)		(14,563	)		(10,205	)		(9,493	)
Loss on extinguishment of debt (3)		(1,332	)		-			(574	)
Loss on change in contractual interest rate (4)		-			-			(2,957	)
Transaction costs and credit facility fees (5)		(3,883	)		(2,145	)		(2,442	)
Business optimization expenses (6)		(952	)		(2,912	)		(7,316	)
Other		(850	)		(761	)		(700	)
Income before provision for income taxes	$	311,076		$	203,699		$	153,697

	Assets
	Year Ended December 31,
	2018		2017		2016
Domestic	$	1,868,554	$	1,612,607	$	1,525,950
International		557,760		413,358		340,019
Total	$	2,426,314	$	2,025,965	$	1,865,969

	Depreciation and Amortization
	Year Ended December 31,
	2018		2017		2016
Domestic	$	35,586	$	37,962	$	42,346
International		11,822		14,026		12,072
Total	$	47,408	$	51,988	$	54,418

	Capital Expenditures
	Year Ended December 31,
	2018		2017		2016
Domestic	$	38,242	$	29,258	$	26,936
International		9,359		4,003		3,531
Total	$	47,601	$	33,261	$	30,467