CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	Aug. 31, 2013
Assets, Current [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 137,098	$ 121,874
Restricted Cash and Cash Equivalents, Current	2,353	5,984
Receivables, net of allowance for doubtful accounts of $0 and $0 as of August 31, 2014 and August 31, 2013, respectively	7,910	3,130
Merchandise inventories	226,383	217,413
Deferred Tax Assets, Net of Valuation Allowance, Current	6,177	6,290
Prepaid expenses and other current assets (includes $495 and $0 as of August 31, 2014 and August 31, 2013, respectively, for the fair value of derivative instruments)	22,570	20,890
Total current assets	402,491	375,581
Restricted Cash and Cash Equivalents, Noncurrent	27,013	34,775
Property, Plant and Equipment, Net	426,325	338,478
Goodwill	36,108	36,364
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	11,825	12,871
Other non-current assets (includes $1,095 and $1,505 as of August 31, 2014 and August 31, 2013, respectively, for the fair value of derivative instruments)	27,593	19,866
Equity Method Investments	8,863	8,104
Total Assets	940,218	826,039
Liabilities, Current [Abstract]
Accounts payable	225,761	199,425
Employee-related Liabilities, Current	17,799	17,862
Deferred Revenue, Current	17,932	16,528
Accrued Income Taxes, Current	7,664	8,059
Accrued Liabilities, Current	21,030	20,136
Long-term Debt, Current Maturities	11,848	12,757
Deferred Tax Liabilities, Net, Current	157	111
Total current liabilities	302,191	274,878
Deferred Tax Liabilities, Net, Noncurrent	2,290	2,622
Deferred Rent Credit, Noncurrent	5,591	4,440
Accrued Income Taxes, Noncurrent	1,918	2,184
Long-term Debt, Excluding Current Maturities	79,591	60,263
Other long-term liabilities (includes $0 and $14 for the fair value of derivative instruments and $372 and $589 for the defined benefit plan as of August 31, 2014 and August 31, 2013, respectively)	372	603
Total liabilities	391,953	344,990
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $0.0001 par value, 45,000,000 shares authorized; 30,950,701 and 30,924,392 shares issued and 30,209,917 and 30,234,506 shares outstanding (net of treasury shares) as of August 31, 2014 and August 31, 2013, respectively	3	3
Additional Paid in Capital, Common Stock	397,150	390,581
Tax benefit from stock-based compensation	9,505	8,016
Accumulated Other Comprehensive Income (Loss), Net of Tax	(49,286)	(41,475)
Retained Earnings (Accumulated Deficit)	215,613	143,871
Less: treasury stock at cost; 740,784 and 689,886 shares as of August 31, 2014 and August 31, 2013, respectively	(24,720)	(19,947)
Total equity	548,265	481,049
Total Liabilities and Equity	$ 940,218	$ 826,039