Goodwill and other intangible assets (Tables)

12 Months Ended

Aug. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Carrying Amount and Accumulated Amortization of Intangible Assets

The carrying amount and accumulated amortization of intangible assets are as follows (dollars in thousands):

	August 31, 2013				August 31, 2012
	Carrying Amount		Accumulated Amortization		Carrying Amount		Accumulated Amortization
Intangible assets:
Patents	$	1,748	$	1,538	$	1,748	$	1,500
Customer lists		190		154		190		59
Non-compete agreements		100		33		100		12
Other intangible assets	$	2,038	$	1,725	$	2,038	$	1,571