CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Revenue	$ 259,293	$ 202,332	$ 514,868	$ 420,750
Cost of revenue:
Total cost of revenue	188,786	147,455	373,742	301,602
Gross profit	70,507	54,877	141,126	119,148
Operating expenses:
Selling, general and administrative	49,394	37,882	94,375	72,764
Amortization	6,438	4,815	12,736	9,381
Total operating expenses	55,832	42,697	107,111	82,145
Operating income (loss)	14,675	12,180	34,015	37,003
Other income (expense):
Net interest expense	(8,222)	(8,056)	(17,141)	(16,273)
Other, net	1,973	(12)	2,127	(81)
Total other income (expense), net	(6,249)	(8,068)	(15,014)	(16,354)
Income from continuing operations before income taxes	8,426	4,112	19,001	20,649
Income tax provision	(3,300)	(1,500)	(7,200)	(5,100)
Income from continuing operations	5,126	2,612	11,801	15,549
Income (loss) from discontinued operations, net of income taxes	6	(228)	159	(444)
Net income	5,132	2,384	11,960	15,105
Net income attributable to non-controlling interest	(591)	(283)	(752)	(579)
Net income attributable to Headwaters Incorporated	$ 4,541	$ 2,101	$ 11,208	$ 14,526
Basic income (loss) per share attributable to Headwaters Incorporated:
From continuing operations (in dollars per share)	$ 0.06	$ 0.03	$ 0.15	$ 0.21
From discontinued operations (in dollars per share)	0.00	0.00	0.00	(0.01)
Basic income per share (in dollars per share)	0.06	0.03	0.15	0.20
Diluted income (loss) per share attributable to Headwaters Incorporated:
From continuing operations (in dollars per share)	0.06	0.03	0.15	0.20
From discontinued operations (in dollars per share)	0.00	0.00	0.00	(0.01)
Diluted income per share (in dollars per share)	$ 0.06	$ 0.03	$ 0.15	$ 0.19
Building products
Revenue:
Revenue	$ 140,716	$ 98,101	$ 275,757	$ 199,696
Cost of revenue:
Total cost of revenue	99,782	69,639	196,311	139,191
Construction materials
Revenue:
Revenue	116,037	102,849	236,028	219,097
Cost of revenue:
Total cost of revenue	87,948	77,347	176,212	161,624
Energy technology
Revenue:
Revenue	2,540	1,382	3,083	1,957
Cost of revenue:
Total cost of revenue	$ 1,056	$ 469	$ 1,219	$ 787