GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Aug. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill

The following table details the changes in the carrying amount of goodwill by reportable segment:

		Americas								International
(in thousands)		Recycling			Mills		Fabrication			Mill			Marketing and Distribution			Consolidated
Goodwill, gross
Balance at September 1, 2015		$	9,751		$	4,970	$	57,637		$	2,517		$	1,912		$	76,787
	Foreign currency translation	—			—		—			(85		)	70			(15		)
Balance at August 31, 2016		9,751			4,970		57,637			2,432			1,982			76,772
	Acquisitions	—			—		306			—			—			306
	Foreign currency translation	—			—		—			232			—			232
Balance at August 31, 2017		$	9,751		$	4,970	$	57,943		$	2,664		$	1,982		$	77,310
Accumulated impairment losses
Balance at September 1, 2015		$	(9,751	)	$	—	$	(493	)	$	(160	)	$	—		$	(10,404	)
	Foreign currency translation	—			—		—			5			—			5
Balance at August 31, 2016		(9,751		)	—		(493		)	(155		)	—			(10,399		)
	Foreign currency translation	—			—		—			(14		)	—			(14		)
	Impairment	—			—		—			—			(1,982		)	(1,982		)
Balance at August 31, 2017		$	(9,751	)	$	—	$	(493	)	$	(169	)	$	(1,982	)	$	(12,395	)
Goodwill, net
Balance at September 1, 2015		$	—		$	4,970	$	57,144		$	2,357		$	1,912		$	66,383
	Foreign currency translation	—			—		—			(80		)	70			(10		)
Balance at August 31, 2016		—			4,970		57,144			2,277			1,982			66,373
	Acquisitions	—			—		306			—			—			306
	Foreign currency translation	—			—		—			218			—			218
	Impairment	—			—		—			—			(1,982		)	(1,982		)
Balance at August 31, 2017		$	—		$	4,970	$	57,450		$	2,495		$	—		$	64,915

Intangible assets subject to amortization

The following intangible assets subject to amortization are included in other noncurrent assets on the Company's consolidated balance sheets:

	August 31, 2017						August 31, 2016
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Customer base	$	6,334	$	2,660	$	3,674	$	6,160	$	2,714	$	3,446
Favorable land leases	10,189		2,849		7,340		10,081		2,518		7,563
Non-competition agreements	1,750		578		1,172		1,600		371		1,229
Brand name	1,328		770		558		628		328		300
Other	101		65		36		101		58		43
Total	$	19,702	$	6,922	$	12,780	$	18,570	$	5,989	$	12,581

Estimated future amortization expense of intangible assets

Estimated amounts of amortization expense for the next five years are as follows.

Year Ended August 31,	(in thousands)
2018	$	1,578
2019	1,342
2020	1,105
2021	1,082
2022	804