Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	Aug. 31, 2012
PrintXcel and Printegra [Member]
Summary of purchase price allocation
Accounts receivable	$ 7,389
Inventories	4,897
Other assets	631
Property, plant & equipment	8,232
Goodwill	4,468
Other long-term assets	1
Accounts payable and accrued liabilities	(2,928)
Total	36,233	36,200
PrintXcel and Printegra [Member] | Customer lists [Member]
Summary of purchase price allocation
Intangible assets other than goodwill	7,930
PrintXcel and Printegra [Member] | Trademarks [Member]
Summary of purchase price allocation
Intangible assets other than goodwill	4,840
PrintXcel and Printegra [Member] | Patent [Member]
Summary of purchase price allocation
Intangible assets other than goodwill	773
PrintGraphics [Member]
Summary of purchase price allocation
Accounts receivable	1,867
Inventories	1,356
Other assets	94
Property, plant & equipment	3,572
Accounts payable and accrued liabilities	(903)
Total	$ 5,986