CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Tax benefit from stock-based compensation [Member]	Accumulated other comprehensive loss [Member]	Retained Earnings (Accumulated deficit) [Member]	Treasury Stock [Member]
Balance at Aug. 31, 2012	$ 418,914	$ 3	$ 384,154	$ 6,680	$ (33,182)	$ 77,739	$ (16,480)
Balance (in shares) at Aug. 31, 2012		30,856,000					645,000
Issuance of treasury stock (in shares)	0
Issuance of restricted stock award (in shares)		6,000
Forfeiture of restricted stock awards (in shares)		(1,000)
Stock-based compensation	1,823		1,823	0
Dividends payable to stockholders	(18,129)					(18,129)
Net income	20,005					20,005
Other Comprehensive Income (Loss)	(1,600)				(1,600)
Balance at Nov. 30, 2012	421,013	3	385,977	6,680	(34,782)	79,615	(16,480)
Balance (in shares) at Nov. 30, 2012		30,861,000					645,000
Balance at Aug. 31, 2012					(33,182)		(16,480)
Balance (in shares) at Aug. 31, 2012							645,000
Other Comprehensive Income (Loss)					(8,293)
Balance at Aug. 31, 2013	481,049	3	390,581	8,016	(41,475)	143,871	(19,947)
Balance (in shares) at Aug. 31, 2013		30,924,000					690,000
Issuance of treasury stock (in shares)	0
Forfeiture of restricted stock awards (in shares)		(1,000)
Stock-based compensation	1,430		1,430	0
Net income	21,432					21,432
Other Comprehensive Income (Loss)	1,149				1,149
Balance at Nov. 30, 2013	$ 505,060	$ 3	$ 392,011	$ 8,016	$ (40,326)	$ 165,303	$ (19,947)
Balance (in shares) at Nov. 30, 2013		30,923,000					690,000