XML 43 R35.htm IDEA: XBRL DOCUMENT
v2.3.0.15

Other Borrowings (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2011
Other Borrowings [Abstract] |
Schedule of maturity dates of securities sold under agreements to repurchase and other borrowings | Maturity dates of securities sold under agreements to repurchase (reverse repurchase agreements) and other borrowings were as follows:
September 30, | 2011 | 2010
| (In thousands)
Reverse repurchase agreements and other borrowings: |  |
Within 1 year | $ | — |  | $ | — |
1 to 3 years | 300,000 |  | — |
4 to 5 years | 300,000 |  | 500,000 |
More than 5 years | 200,000 |  | 300,000 |
| $ | 800,000 |  | $ | 800,000 |
Schedule of maturity dates of reverse repurchase agreements and other borrowings if callable agreements called at earliest dates | If these were to be called at the earliest call dates, the maturities of the reverse repurchase agreements and other borrowings would be as follows:
September 30, | 2011 | 2010
| (In thousands)
Reverse repurchase agreements and other borrowings: |  |
Within 1 year | $ | 200,000 |  | $ | — |
1 to 3 years | 300,000 |  | 500,000 |
4 to 5 years | 300,000 |  | 200,000 |
More than 5 years | — |  | 100,000 |
| $ | 800,000 |  | $ | 800,000 |
Schedule of financial data pertaining to weighted-average cost and amount of securities sold under agreements to repurchase | Financial data pertaining to the weighted-average cost and the amount of securities sold under agreements to repurchase and other borrowings were as follows:
September 30, | 2011 | 2010 | 2009
Weighted average interest rate at end of year | 3.90 | % | 3.90 | % | 3.90 | %
Weighted daily average interest rate during the year | 3.73 | % | 3.90 | % | 3.90 | %
Daily average of securities sold under agreements to repurchase | $ | 800,000 |  | $ | 800,000 |  | $ | 800,000 |
Maximum securities sold under agreements to repurchase at any month end | 800,000 |  | 800,000 |  | 800,000 |
Interest expense during the year | 29,867 |  | 29,867 |  | 31,061 |
Schedule of financial data pertaining to weighted-average cost and amount of other borrowings | Financial data pertaining to the weighted average cost and the amount of other borrowings were as follows:
September 30, | 2011 | 2010 | 2009
Weighted average interest rate at end of year | — | % | — | % | 5.98 | %
Weighted daily average interest rate during the year | — | % | 4.98 | % | 0.69 | %
Daily average of other borrowings | — |  | $ | 9,479 |  | $ | 191,989 |
Maximum other borrowings at any month end | — |  | 14,310 |  | 240,600 |
Interest expense during the year | — |  | 22 |  | 1,327 |

X
- Definition Other Borrowings [Abstract] + Details
Name: | wfsl_OtherBorrowingsAbstract
Namespace Prefix: | wfsl
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Securities Sold under Agreements to Repurchase and Other Borrowings, Calls Considered [Table Text Block] + Details
Name: | wfsl_ScheduleOfSecuritiesSoldUnderAgreementsToRepurchaseAndOtherBorrowingsCallsConsideredTableTextBlock
Namespace Prefix: | wfsl
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Securities Sold under Agreements to Repurchase and Other Borrowings [Table Text Block] + Details
Name: | wfsl_ScheduleOfSecuritiesSoldUnderAgreementsToRepurchaseAndOtherBorrowingsTableTextBlock
Namespace Prefix: | wfsl
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Weighted Average Cost and Amount of Other Borrowings [Table Text Block] + Details
Name: | wfsl_ScheduleOfWeightedAverageCostAndAmountOfOtherBorrowingsTableTextBlock
Namespace Prefix: | wfsl
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Weighted Average Cost and Amount of Securities Sold under Agreements to Repurchase + Details
Name: | wfsl_ScheduleOfWeightedAverageCostAndAmountOfSecuritiesSoldUnderAgreementsToRepurchase
Namespace Prefix: | wfsl
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration