Subsequent Events (Details) - Subsequent Event - Altabancorp $ in Thousands	Oct. 01, 2021 USD ($) shares
Subsequent Event
Percentage of outstanding common stock acquired	100.00%
Business combination, assets acquired	$ 3,647,728
Business combination, acquired loans receivable	1,901,181
Business combination, acquired deposits	3,278,907
Value of acquisition	$ 839,852
Number of shares issued for acquisition (in shares) \| shares	15,173,480

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable, Gross

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- Definition

Amount of deposits assumed at the acquisition date

+ References

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets acquired at the acquisition date.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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