The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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-Publisher FASB
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Period Type:	duration

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jul. 21, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 365,415		$ 365,415		$ 260,567
Amortization of intangible assets	1,500	$ 1,400	4,199	$ 4,256
Core deposit
Finite-Lived Intangible Assets [Line Items]
Useful life					10 years
First Choice Bancorp
Finite-Lived Intangible Assets [Line Items]
Goodwill increase	104,848		104,848
Goodwill	$ 365,400		$ 365,400		$ 260,600	$ 73,425