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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Goodwill and Other Acquisition-Related Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Indefinite-lived Intangible Assets [Line Items]
Goodwill recorded on acquisition			$ 2,622
Goodwill decrease for foreign currency translation adjustments			(37)
Amortization of other acquisition-related intangible assets	$ 1,408	$ 1,492	4,142	$ 4,680
Wealth management
Indefinite-lived Intangible Assets [Line Items]
Goodwill recorded on acquisition			2,622
Goodwill decrease for foreign currency translation adjustments			$ 0
Wealth management \| Customer list and other intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets	10 years		10 years
Specialty finance
Indefinite-lived Intangible Assets [Line Items]
Goodwill recorded on acquisition			$ 0
Goodwill decrease for foreign currency translation adjustments			$ (37)
Specialty finance \| Customer list intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets	18 years		18 years
Community banking
Indefinite-lived Intangible Assets [Line Items]
Goodwill recorded on acquisition			$ 0
Goodwill decrease for foreign currency translation adjustments			$ 0
Community banking \| Core deposit intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets	10 years		10 years