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Stockholders' Equity (Tables)
12 Months Ended
Aug. 31, 2017
Stockholders' Equity [Abstract]  
Schedule Of Recognized Stock Based Compensation Expense [Table Text Block]
The Company recognized stock-based compensation expense within selling, general and administrative expense as follows
(in thousands):
Fiscal Year Ended August 31,
201720162015
Restricted stock and stock appreciation rights ("SARS")$42,122$52,459$58,033
Employee stock purchase plan6,3346,5384,717
Other88(187)
Total$48,544$58,997$62,563
Schedule Of Shares Available For Issuance [Table Text Block]

Following is a reconciliation of the shares available to be issued under the 2011 Plan as of August 31, 2017:

Shares Available for Grant
Balance as of August 31, 20164,898,739
Shares authorized (1)4,950,000
SARS canceled 1,357,386
Restricted stock awards forfeited, net of grants(2)1,022,811
Balance as of August 31, 201712,228,936
(1)In January 2017, the Company’s stockholders approved increasing the maximum aggregate number of shares available for
issuance under the 2011 Plan to 23,300,000.
(2)Represents the maximum number of shares that can be issued based on the achievement of certain performance criteria.
Summary of Option Activity
The following table summarizes SARS activity from August 31, 2016 through August 31, 2017:

Weighted-
Weighted-Average
AverageAverageRemaining
SARSIntrinsic ValueExerciseContractual
Outstanding(in thousands)PriceLife (years)
Outstanding as of August 31, 20162,439,066$1,066$25.321.13
SARS canceled (1,357,386)$29.15
SARS exercised (762,439)$20.78
Outstanding and exercisable as of August 31, 2017319,241$3,651$19.912.10
Restricted Stock Activity
The following table summarizes restricted stock activity from August 31, 2016 through August 31, 2017:
Weighted-
Average
Grant-Date
SharesFair Value
Outstanding as of August 31, 201614,777,178$21.09
Changes during the period
Shares granted(1)3,507,690$23.65
Shares vested(2,102,049)$20.94
Shares forfeited(4,530,500)$20.84
Outstanding as of August 31, 201711,652,319$22.00
(1)For those shares granted that are based on the achievement of certain performance criteria, the amount represents the maximum number of shares that can vest. During the fiscal year ended August 31, 2017, the Company awarded approximately 1.8 million time-based restricted stock units, 0.6 million performance-based restricted stock units and 0.4 million market-based restricted stock units based on target performance criteria.
Schedule Of Share Based Compensation Information [TableTextBlock]
Following represents the restricted stock and SARS stock-based compensation information for the periods indicated (in thousands):
Fiscal Year Ended August 31,
201720162015
Intrinsic value of SARS exercised$5,053$506$954
Fair value of SARS vested$$$2,754
Fair value of restricted stock vested$44,010$34,857$33,413
Tax benefit (expense) for stock compensation expense(1)$560$991$(351)
Capitalized stock compensation expense(2)$313$387$387
Unrecognized stock-based compensation expense - restricted stock$45,158
Remaining weighted-average period for restricted stock expense1.4 years
(1)Classified as income tax expense within the Consolidated Statements of Operations.
(2)Classified as inventories within the Consolidated Balance Sheets.
Weighted Average Assumptions used in Black-Scholes Option Pricing Model
The fair value of shares issued under the ESPP was estimated on the commencement date of each offering period using the
Black-Scholes option pricing model. The following weighted-average assumptions were used in the model for each respective period:
Fiscal Year Ended August 31,
201720162015
Expected dividend yield 0.8%0.7%0.8%
Risk-free interest rate 0.5%0.3%0.1%
Expected volatility (1)33.0%28.1%24.5%
Expected life 0.5 years0.5 years0.5 years
(1)The expected volatility was estimated using the historical volatility derived from the Company's common stock.
Cash Dividends Declared to Common Stockholders

The following table sets forth certain information relating to the Company’s cash dividends declared to common stockholders during fiscal years 2017 and 2016:

Total of Cash
DividendDividendDividendsDate of Record forDividend Cash
Declaration Date per ShareDeclaredDividend Payment Payment Date
(in thousands, except for per share data)
Fiscal year 2017:October 20, 2016$0.08$15,248November 15, 2016December 1, 2016
January 26, 2017$0.08$15,051February 15, 2017March 1, 2017
April 20, 2017$0.08$14,840May 15, 2017June 1, 2017
July 20, 2017$0.08$14,698August 15, 2017September 1, 2017
Fiscal year 2016:October 14, 2015$0.08$15,906November 16, 2015December 1, 2015
January 21, 2016$0.08$15,947February 16, 2016March 1, 2016
April 21, 2016$0.08$15,940May 16, 2016June 1, 2016
July 21, 2016$0.08$15,575August 15, 2016September 1, 2016