CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue:
Light building products	$ 118,035	$ 97,164	$ 279,501	$ 244,809
Heavy construction materials	75,114	74,728	197,286	189,105
Energy technology	3,881	3,729	10,804	8,766
Total revenue	197,030	175,621	487,591	442,680
Cost of revenue:
Light building products	82,096	66,558	202,723	176,501
Heavy construction materials	54,642	54,863	151,622	143,341
Energy technology	1,787	1,842	5,085	4,473
Total cost of revenue	138,525	123,263	359,430	324,315
Gross profit	58,505	52,358	128,161	118,365
Operating expenses:
Amortization	5,319	4,936	15,543	15,739
Research and development	1,786	2,280	5,209	5,750
Selling, general and administrative	28,215	29,212	79,308	76,186
Restructuring costs	0	0	0	2,145
Total operating expenses	35,320	36,428	100,060	99,820
Operating income	23,185	15,930	28,101	18,545
Other income (expense):
Net interest expense	(11,111)	(15,975)	(32,722)	(41,958)
Other, net	24	57	262	(4,253)
Total other income (expense), net	(11,087)	(15,918)	(32,460)	(46,211)
Income (loss) from continuing operations before income taxes	12,098	12	(4,359)	(27,666)
Income tax benefit (provision)	(2,850)	2,030	(550)	(1,800)
Income (loss) from continuing operations	9,248	2,042	(4,909)	(29,466)
Income (loss) from discontinued operations, net of income taxes	1,768	(15,078)	1,793	(27,876)
Net income (loss)	$ 11,016	$ (13,036)	$ (3,116)	$ (57,342)
Basic and diluted income (loss) per share:
From continuing operations (in dollars per share)	$ 0.13	$ 0.03	$ (0.07)	$ (0.48)
From discontinued operations (in dollars per share)	$ 0.02	$ (0.24)	$ 0.02	$ (0.46)
Earnings (loss) per share, basic and diluted, total (in dollars per share)	$ 0.15	$ (0.21)	$ (0.05)	$ (0.94)