Note 7 - Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Net Sales by Segment
	Three Months Ended March 31, 2019
Product Classes	Domestic		International		Total
Residential products	$	205,181	$	12,649	$	217,830
Commercial & industrial products		122,446		86,678		209,124
Other		31,621		11,778		43,399
Total net sales	$	359,248	$	111,105	$	470,353

	Net Sales by Segment
	Three Months Ended March 31, 2018
Product Classes	Domestic		International		Total
Residential products	$	176,685	$	13,789	$	190,474
Commercial & industrial products		97,771		77,354		175,125
Other		28,220		6,272		34,492
Total net sales	$	302,676	$	97,415	$	400,091

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

	Adjusted EBITDA
	Three Months Ended March 31,
	2019			2018
Domestic	$	80,975		$	65,475
International		6,153			6,306
Total adjusted EBITDA	$	87,128		$	71,781
Interest expense		(10,272	)		(10,113	)
Depreciation and amortization		(12,607	)		(11,683	)
Non-cash write-down and other adjustments (1)		1,400			(1,306	)
Non-cash share-based compensation expense (2)		(3,594	)		(3,106	)
Transaction costs and credit facility fees (3)		(1,286	)		(262	)
Business optimization expenses (4)		(169	)		(138	)
Other		154			13
Income before provision for income taxes	$	60,754		$	45,186