XML 113 R37.htm IDEA: XBRL DOCUMENT
v2.3.0.15

Stock Options (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2011
Stock Options [Abstract] |
Schedule of weighted average assumptions | The following weighted-average assumptions were used to estimate the fair value of options granted during the periods indicated:
Year ended September 30, | 2011 | 2010 | 2009
Annual dividend yield | 1.89 | % | 1.20 | % | 3.83 | %
Expected volatility | 30 | % | 26 | % | 24 | %
Risk-free interest rate | 2.00 | % | 2.20 | % | 1.73 | %
Expected life | 4.5 years |  | 4.5 years |  | 4.5 years |
Summary of option activity | A summary of option activity under the Plans as of September 30, 2011, and changes during the year then ended is as follows:
Options | Shares | Weighted Average Exercise Price | Weighted Average Remaining Contractual Term | Aggregate Intrinsic Value (In thousands)
Outstanding at September 30, 2010 | 2,643,307 |  | $ | 20.16 |  |  |
Granted | 370,650 |  | 16.84 |  |  |
Exercised | (109,790 | ) | 14.84 |  |  |
Forfeited | (162,927 | ) | 19.43 |  |  |
Outstanding at September 30, 2011 | 2,741,240 |  | $ | 19.97 |  | 5 |  | $ | 344 |
Exercisable at September 30, 2011 | 1,732,382 |  | $ | 20.79 |  | 3 |  | $ | 85 |
Schedule of miscellaneous information related to stock options | Miscellaneous information related to stock options is presented below:
| 2011 | 2010 | 2009
Compensation cost for stock options | 1,087,000 |  | 1,213,000 |  | 1,327,000 |
Weighted avg. grant date FV | 4 |  | 4 |  | 2 |
Total intrinsic value of options exercised | 259,000 |  | 975,000 |  | 65,000 |
Grant date FV of options exercised | 312,000 |  | 482,000 |  | 57,000 |
Cash received from option exercises | 1,630,000 |  | 1,760,000 |  | 158,000 |
Tax benefit realized for option exercises | 37,000 |  | 227,000 |  | 21,000 |
Summary of nonvested activity | A summary of the status of the Company's nonvested options as of September 30, 2011, and changes during the year then ended is as follows:
Nonvested Options | Shares | Weighted Average Grant Date Fair Value
Outstanding at September 30, 2010 | 1,217,083 |  | $ | 2.66 |
Granted | 370,650 |  | 3.89 |
Vested | (486,094 | ) | 2.86 |
Forfeited | (92,781 | ) | 2.66 |
Outstanding at September 30, 2011 | 1,008,858 |  | $ | 3.02 |

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Other Information Related to Stock Option Activity [Table Text Block] + Details
Name: | wfsl_ScheduleOfOtherInformationRelatedToStockOptionActivityTableTextBlock
Namespace Prefix: | wfsl
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Options [Abstract] + Details
Name: | wfsl_StockOptionsAbstract
Namespace Prefix: | wfsl
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration