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Financial Information - Washington Federal, Inc. - Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Cash Flows From Operating Activities |  |  |
Net income | $ 183,615 | $ 173,438 | $ 210,256
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Stock-based compensation expense | 6,381 | 6,469 | 5,265
Net cash provided (used) by operating activities | 314,454 | 166,600 | 234,054
Cash Flows From Investing Activities |  |  |
Purchase of strategic investments | 0 | 0 | (5,000)
Net cash provided (used) by investing activities | (579,745) | (920,979) | (421,373)
Cash Flows From Financing Activities |  |  |
Proceeds from exercise of common stock options and related tax benefit | 339 | 144 | 740
Proceeds from issuance of preferred stock, net | 293,325 | 0 | 0
Treasury stock purchased | (348,651) | (112,133) | (123,854)
Dividends paid on preferred stock | (6,378) | 0 | 0
Dividends on common stock | (65,876) | (66,496) | (63,318)
Net cash provided (used) by financing activities | 653,123 | 2,038,198 | 337,827
Cash at beginning of year | 1,702,977 |  |
Cash at end of year | 2,090,809 | 1,702,977 |
Parent Company |  |  |
Cash Flows From Operating Activities |  |  |
Net income | 183,615 | 173,438 | 210,256
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Equity in undistributed net income (loss) of subsidiaries | (91,697) | 17,055 | (2,213)
Stock-based compensation expense | 6,381 | 6,469 | 5,265
Increase (decrease) in other liabilities | 440 | 0 | (3,489)
Net cash provided (used) by operating activities | 98,739 | 196,962 | 209,819
Cash Flows From Investing Activities |  |  |
Purchase of strategic investments | 0 | 0 | (5,000)
Net cash provided (used) by investing activities | 0 | 0 | (5,000)
Cash Flows From Financing Activities |  |  |
Proceeds from exercise of common stock options and related tax benefit | 339 | 144 | 740
Proceeds from issuance of preferred stock, net | 293,325 | 0 |
Treasury stock purchased | (348,651) | (112,133) | (123,854)
Dividends paid on preferred stock | (6,378) | 0 | 0
Dividends on common stock | (65,876) | (66,496) | (63,318)
Net cash provided (used) by financing activities | (127,241) | (178,485) | (186,432)
Increase (decrease) in cash | (28,502) | 18,477 | 18,387
Cash at beginning of year | 57,198 | 38,721 | 20,334
Cash at end of year | $ 28,696 | $ 57,198 | $ 38,721

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