Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities:
Net income	$ 165,564	$ 202,113
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Provision (benefit) for credit losses	201,088	(47,250)
Deferred income tax (benefit) expense	(44,293)	16,012
Stock-based compensation expense	30,469	6,433
Depreciation and amortization of property and equipment and intangible assets	40,673	18,683
(Accretion) and amortization of net (premiums) discounts on earnings assets and borrowings	(25,429)	66,312
Amortization of low-income housing tax credit investments	26,449	1,992
Amortization of mortgage servicing assets	1,769	2,932
Reduction of right-of-use lease assets	39,865	1,336
Net (gain) on sale, net of write-downs, of foreclosed properties and repossessed assets	(418)	(141)
Net loss on sale, net of write-downs, of property and equipment	4,740	191
Originations of loans held for sale	(28,098)	(135,930)
Proceeds from sale of loans held for sale	32,833	147,735
Net (gain) on mortgage banking activities	(503)	(3,460)
Net (gain) on sale of loans not originated for sale	(3,173)	(718)
(Increase) in cash surrender value of life insurance policies	(14,976)	(7,136)
(Gain) from life insurance policies	(1,447)	(805)
Net decrease in derivative contract assets and liabilities	336,819	106,759
Net (increase) in accrued interest receivable and other assets	(57,705)	(95,884)
Net (decrease) increase in accrued expenses and other liabilities	(65,422)	34,057
Net cash provided by operating activities	638,805	313,231
Investing Activities:
Purchases of available-for-sale securities	(1,099,810)	(504,286)
Proceeds from principal payments, maturities, and calls of available-for-sale securities	475,922	510,484
Purchases of held-to-maturity securities	(847,534)	(775,673)
Proceeds from principal payments, maturities, and calls of held-to-maturity securities	476,710	694,951
Net (increase) decrease in Federal Home Loan Bank and Federal Reserve Bank stock	(107,086)	720
Alternative investments (capital calls), net of distributions	(7,184)	(5,568)
Net (increase) decrease in loans	(2,815,067)	84,886
Proceeds from sale of loans not originated for sale	118,505	49,122
Proceeds from sale of foreclosed properties and repossessed assets	1,290	523
Proceeds from sale of property and equipment	0	2,413
Additions to property and equipment	(9,895)	(7,407)
Proceeds from life insurance policies	11,576	2,683
Net cash paid for acquisition of Bend	(54,407)	0
Net cash received in merger with Sterling	513,960	0
Net cash (used for) provided by investing activities	(3,343,020)	52,848
Financing Activities:
Net (decrease) increase in deposits	(41,467)	1,510,573
Proceeds from Federal Home Loan Bank advances	5,150,000	180,470
Repayments of Federal Home Loan Bank advances	(2,650,187)	(175,190)
Net increase (decrease) in securities sold under agreements to repurchase and other borrowings	1,041,702	(488,231)
Dividends paid to common shareholders	(107,469)	(72,349)
Dividends paid to preferred shareholders	(5,401)	(3,938)
Exercise of stock options	497	3,386
Common stock repurchase program	(222,130)	0
Common shares acquired related to stock compensation plan activity	(21,095)	(4,011)
Net cash provided by financing activities	3,144,450	950,710
Net increase in cash and cash equivalents	440,235	1,316,789
Cash and cash equivalents at beginning of period	461,570	263,104
Cash and cash equivalents at end of period	901,805	1,579,893
Supplemental disclosure of cash flow information:
Interest paid	49,544	23,133
Income taxes paid	66,064	80,873
Non-cash investing and financing activities:
Transfer of loans and leases to foreclosed properties and repossessed assets	575	829
Transfer of loans from portfolio to loans-held-for-sale	91,815	48,395
Sterling
Non-cash investing and financing activities:
Tangible assets acquired	27,434,111	0
Goodwill and other intangible assets	2,149,532	0
Common stock issued	5,041,182	0
Liabilities assumed	24,403,343	0
Sterling | Preferred Stock
Non-cash investing and financing activities:
Preferred stock exchanged	138,942	0
Bend Financial, Inc.
Non-cash investing and financing activities:
Tangible assets acquired	16,597	0
Goodwill and other intangible assets	38,966	0
Liabilities assumed	$ 290	$ 0