Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Feb. 28, 2017

Finite-Lived Intangible Assets [Line Items]

Schedule of Goodwill [Table Text Block]

	Energy		Ag			Corporate and Other			Total
	(Dollars in thousands)
Balances, August 31, 2016	$	552	$	148,916		$	10,946		$	160,414
Effect of foreign currency translation adjustments	—		(284		)	—			(284		)
Other	—		—			(372		)	(372		)
Balances, February 28, 2017	$	552	$	148,632		$	10,574		$	159,758

Schedule of Intangible Assets and Goodwill [Table Text Block]

	February 28, 2017							August 31, 2016
	Carrying Amount		Accumulated Amortization			Net		Carrying Amount		Accumulated Amortization			Net
	(Dollars in thousands)
Customer lists	$	49,379	$	(13,899	)	$	35,480	$	51,554	$	(15,550	)	$	36,004
Trademarks and other intangible assets	31,569		(24,015		)	7,554		35,015		(26,253		)	8,762
Total intangible assets	$	80,948	$	(37,914	)	$	43,034	$	86,569	$	(41,803	)	$	44,766

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

	(Dollars in thousands)
Year 1	$	3,991
Year 2	3,989
Year 3	3,810
Year 4	3,526
Year 5	3,423