Segments - Schedule of Net Sales From External Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue from External Customer [Line Items]
Net sales	$ 529,230	$ 270,147	$ 1,008,687	$ 514,752
Gross Profit	149,532	$ 79,335	289,443	$ 151,580
Change in Gross Profit	$ 70,197		$ 137,863
Percentage Change in Gross Profit	88.50%		91.00%
Gross Margin Percentage	28.30%	29.40%	28.70%	29.40%
Percentage Change in Gross Margin	(1.10%)		(0.70%)
SBP
Revenue from External Customer [Line Items]
Net sales	$ 460,086	$ 270,147	$ 878,549	$ 514,752
Percentage of Net Sales	100.00%	100.00%	100.00%	100.00%
Change in Net Sales	$ 189,939		$ 363,797
Percentage Change in Net Sales	70.30%		70.70%
Gross Profit	$ 130,729	$ 79,335	$ 253,155	$ 151,580
Change in Gross Profit	$ 51,394		$ 101,575
Percentage Change in Gross Profit	64.80%		67.00%
Gross Margin Percentage	28.40%	29.40%	28.80%	29.40%
Percentage Change in Gross Margin	(1.00%)		(0.60%)
SBP | Wallboard
Revenue from External Customer [Line Items]
Net sales	$ 181,062	$ 117,507	$ 349,576	$ 226,441
Percentage of Net Sales	39.40%	43.50%	39.80%	44.00%
Change in Net Sales	$ 63,555		$ 123,135
Percentage Change in Net Sales	54.10%		54.40%
SBP | Suspended ceiling systems
Revenue from External Customer [Line Items]
Net sales	$ 83,271	$ 29,679	$ 155,984	$ 55,835
Percentage of Net Sales	18.10%	11.00%	17.80%	10.80%
Change in Net Sales	$ 53,592		$ 100,149
Percentage Change in Net Sales	180.60%		179.40%
SBP | Metal framing
Revenue from External Customer [Line Items]
Net sales	$ 72,404	$ 48,485	$ 141,065	$ 91,465
Percentage of Net Sales	15.70%	17.90%	16.10%	17.80%
Change in Net Sales	$ 23,919		$ 49,600
Percentage Change in Net Sales	49.30%		54.20%
SBP | Other products
Revenue from External Customer [Line Items]
Net sales	$ 123,349	$ 74,476	$ 231,924	$ 141,011
Percentage of Net Sales	26.80%	27.60%	26.30%	27.40%
Change in Net Sales	$ 48,873		$ 90,913
Percentage Change in Net Sales	65.60%		64.50%
Mechanical Insulation
Revenue from External Customer [Line Items]
Net sales	$ 69,144	$ 0	$ 130,138	$ 0
Percentage of Net Sales	100.00%	0.00%	100.00%	0.00%
Change in Net Sales	$ 69,144		$ 130,138
Percentage Change in Net Sales	0.00%		0.00%
Gross Profit	$ 18,803	$ 0	$ 36,288	$ 0
Change in Gross Profit	$ 18,803		$ 36,288
Percentage Change in Gross Profit	0.00%		0.00%
Gross Margin Percentage	27.20%	0.00%	27.90%	0.00%
Percentage Change in Gross Margin	0.00%		0.00%
Mechanical Insulation | Commercial and industrial insulation
Revenue from External Customer [Line Items]
Net sales	$ 49,730	$ 0	$ 95,041	$ 0
Percentage of Net Sales	71.90%	0.00%	73.00%	0.00%
Change in Net Sales	$ 49,730		$ 95,041
Percentage Change in Net Sales	0.00%		0.00%
Mechanical Insulation | Non-insulation products
Revenue from External Customer [Line Items]
Net sales	$ 19,414	$ 0	$ 35,097	$ 0
Percentage of Net Sales	28.10%	0.00%	27.00%	0.00%
Change in Net Sales	$ 19,414		$ 35,097
Percentage Change in Net Sales	0.00%		0.00%