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Financial Information - Washington Federal, INC. Statements of Operations and Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Expense |  |  |
Net income before equity in undistributed net income of subsidiary | $ 215,911 | $ 173,659 | $ 123,025
Income tax benefit | 77,728 | 62,518 | 4,372
NET INCOME | 138,183 | 111,141 | 118,653
Cash Flows From Operating Activities |  |  |
NET INCOME | 138,183 | 111,141 | 118,653
Adjustments to reconcile net income to net cash provided by operating activities |  |  |
Decrease (increase) in other assets | (74,889) | 21,600 | (51,641)
Net cash provided by (used in) operating activities | 174,956 | 261,697 | 250,881
Cash Flows From Financing Activities |  |  |
Proceeds from exercise of common stock options and related tax benefit | 357 | 1,686 | 1,940
Increase (decrease) in borrowings | (995,306) | (100,000) | (539,034)
Treasury stock purchased | (41,914) | (59,680) | 0
Dividends paid on common stock | (32,430) | (25,697) | (22,450)
Net cash used by financing activities | (1,293,868) | (170,284) | (167,931)
Increase (decrease) in cash | (64,572) | (72,620) | 390,234
Cash and cash equivalents at beginning of period | 816,002 | 888,622 | 498,388
Cash and cash equivalents at ending of period | 751,430 | 816,002 | 888,622
Parent Company [Member] |  |  |
Income |  |  |
Dividends from subsidiary | 106,234 | 100,600 | 0
Other | 0 | 0 | 14
Total Income | 106,234 | 100,600 | 14
Expense |  |  |
Miscellaneous | 564 | 626 | 1,046
Total expense | 564 | 626 | 1,046
Net income before equity in undistributed net income of subsidiary | 105,670 | 99,974 | (1,032)
Equity in undistributed net income of subsidiary | 32,513 | 11,167 | 119,324
Income before income taxes | 138,183 | 111,141 | 118,292
Income tax benefit | 0 | 0 | 361
NET INCOME | 138,183 | 111,141 | 118,653
Cash Flows From Operating Activities |  |  |
NET INCOME | 138,183 | 111,141 | 118,653
Adjustments to reconcile net income to net cash provided by operating activities |  |  |
Equity in undistributed net income of subsidiaries | (32,513) | (4,382) | (119,324)
Decrease (increase) in dividend receivable | 0 | 0 | 0
Decrease (increase) in other assets | 36 | (37) | 1,309
Increase (decrease) in other liabilities | 2,508 | 1,121 | (421)
Net cash provided by (used in) operating activities | 108,214 | 107,843 | 217
Cash Flows From Financing Activities |  |  |
Proceeds from exercise of common stock options and related tax benefit | 357 | 1,686 | 1,940
Proceeds from Employee Stock Ownership Plan | 0 | 0 | 0
Net proceeds from follow on stock offering |  |  | 0
Downstream stock offering proceeds to the Bank | 0 | 0 | 0
Proceeds from issuance of preferred stock and warrants |  |  |
Preferred stock redeemed |  |  |
Increase (decrease) in borrowings | 0 | 0 | (14,310)
Treasury stock purchased | (41,914) | (59,680) | 0
Dividends paid on preferred stock |  |  |
Dividends paid on common stock | (32,430) | (26,796) | (22,450)
Net cash used by financing activities | (73,987) | (84,790) | (34,820)
Increase (decrease) in cash | 34,227 | 23,053 | (34,603)
Cash and cash equivalents at beginning of period | 27,699 | 4,646 | 39,249
Cash and cash equivalents at ending of period | $ 61,926 | $ 27,699 | $ 4,646

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