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Parent Company Financial Statements (Schedule Of Condensed Statements Of Cash Flows) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items] |  |  |
Net Income (Loss) | $ 348,715 | $ 336,752 | $ 420,300
Depreciation, amortization, and accretion | 144,252 | 28,305 | 31,498
Net increase in other assets | (24,163) | 169,540 | 153,148
Net (decrease) increase in other liabilities | (94,910) | 230,223 | (9,376)
Net cash provided by operating activities | 669,840 | 1,065,029 | 662,723
Net increase in advances to subsidiaries | 274,587 | 0 | 0
Net cash received from sale of Umpqua Investments, Inc. | 0 | 0 | 10,781
Net cash provided (used) in investing activities | 501,736 | (3,533,092) | (1,534,275)
Dividends paid on common stock | (270,261) | (182,273) | (183,734)
Repurchases and retirement of common stock | (6,282) | (4,163) | (80,690)
Net proceeds from issuance of common stock | 1,185 | 54 | 34
Net cash (used) provided by financing activities | (303,685) | 1,001,085 | 1,059,992
Net increase (decrease) in cash and cash equivalents | 867,891 | (1,466,978) | 188,440
Cash and cash equivalents, beginning of period | 1,294,643 | 2,761,621 | 2,573,181
Cash and cash equivalents, end of period | 2,162,534 | 1,294,643 | 2,761,621
Umpqua Holdings Corporation |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net Income (Loss) | 348,715 | 336,752 | 420,300
Gain on sale of Umpqua Investments, Inc. | 0 | 0 | (4,444)
Equity in undistributed earnings of subsidiaries | (21,498) | (161,674) | (23,876)
Depreciation, amortization, and accretion | (228) | (228) | (228)
Net increase in other assets | (176) | (2,334) | (1,001)
Net (decrease) increase in other liabilities | (5,472) | 2,212 | 2,589
Net cash provided by operating activities | 321,341 | 174,728 | 393,340
Net increase in advances to subsidiaries | (143,535) | (121,409) | (313)
Net cash received from sale of Umpqua Investments, Inc. | 0 | 0 | 10,781
Net cash provided (used) in investing activities | (143,535) | (121,409) | 10,468
Net increase (decrease) in advances from subsidiaries | 317 | (379) | 409
Dividends paid on common stock | (270,261) | (182,273) | (183,734)
Repurchases and retirement of common stock | (6,282) | (4,163) | (80,690)
Net proceeds from issuance of common stock | 1,185 | 54 | 34
Net cash (used) provided by financing activities | (275,041) | (186,761) | (263,981)
Net increase (decrease) in cash and cash equivalents | (97,235) | (133,442) | 139,827
Cash and cash equivalents, beginning of period | 143,130 | 276,572 | 136,745
Cash and cash equivalents, end of period | $ 45,895 | $ 143,130 | $ 276,572

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |