CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Aug. 31, 2015	Aug. 31, 2014
Assets, Current [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 157,072	$ 137,098
Restricted Cash and Cash Equivalents, Current	61	2,353
Receivables, net of allowance for doubtful accounts of $0 as of August 31, 2015 and August 31, 2014, respectively	9,662	7,910
Merchandise inventories	267,175	226,383
Deferred Tax Assets, Net of Valuation Allowance, Current	7,849	6,177
Prepaid expenses and other current assets (includes $0 and $495 as of August 31, 2015 and August 31, 2014, respectively, for the fair value of derivative instruments)	22,535	17,260
Total current assets	464,354	397,181
Restricted Cash and Cash Equivalents, Noncurrent	1,464	27,013
Property, Plant and Equipment, Net	433,040	426,325
Goodwill	35,871	36,108
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	7,464	11,825
Other non-current assets (includes $4,129 and $1,095 as of August 31, 2015 and August 31, 2014, respectively, for the fair value of derivative instruments)	39,182	30,755
Equity Method Investments	10,317	8,863
Total Assets	991,692	938,070
Liabilities, Current [Abstract]
Short-term Debt	6,606	0
Accounts payable	241,978	223,559
Employee-related Liabilities, Current	17,977	16,614
Deferred Revenue, Current	20,184	17,932
Accrued Income Taxes, Current	9,595	7,718
Other accrued expenses (includes $66 and $14 as of August 31, 2015 and August 31, 2014, respectively, for the fair value of foreign currency forward contracts)	23,558	21,030
Long-term Debt, Current Maturities	17,169	11,848
Deferred Tax Liabilities, Net, Current	30	157
Total current liabilities	337,097	298,858
Deferred Tax Liabilities, Net, Noncurrent	2,193	2,290
Deferred Rent Credit, Noncurrent	6,595	5,591
Accrued Income Taxes, Noncurrent	1,402	1,918
Long-term Debt, Excluding Current Maturities	73,365	79,591
Other long-term liabilities (includes $1,699 and $0 for the fair value of derivative instruments and $2,757 and $1,557 for post employment plans as of August 31, 2015 and August 31, 2014, respectively)	4,456	1,557
Total liabilities	425,108	389,805
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $0.0001 par value, 45,000,000 shares authorized; 30,977,764 and 30,950,701 shares issued and 30,184,584 and 30,209,917 shares outstanding (net of treasury shares) as of August 31, 2015 and August 31, 2014, respectively	3	3
Additional Paid in Capital, Common Stock	403,168	397,150
Tax benefit from stock-based compensation	10,711	9,505
Accumulated Other Comprehensive Income (Loss), Net of Tax	(101,512)	(49,286)
Retained Earnings (Accumulated Deficit)	283,611	215,613
Less: treasury stock at cost; 793,180 and 740,784 shares as of August 31, 2015 and August 31, 2014, respectively	(29,397)	(24,720)
Total equity	566,584	548,265
Total Liabilities and Equity	$ 991,692	$ 938,070