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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Beginning balance	$ 280,541	$ 274,769
Goodwill acquired	0	5,772
Ending balance	280,541	280,541	$ 274,769
Finite-Lived Intangible Assets [Abstract]
Gross carrying amount	32,460	36,008
Less: accumulated amortization	23,533	24,273
Net carrying amount	8,927	11,735
Impairment of goodwill	0	0
Amortization Expense [Abstract]
Amortization of intangible assets	2,808	3,395	3,579
Future Amortization Expense [Abstract]
2022	2,200
2023	1,800
2024	1,500
2025	1,200
2026	900
Thereafter	1,300
Impairment of intangible assets	$ 0	0	$ 0
Minimum [Member]
Finite-Lived Intangible Assets [Abstract]
Intangible asset useful life	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Abstract]
Intangible asset useful life	20 years
Core Deposits Intangibles [Member]
Finite-Lived Intangible Assets [Abstract]
Gross carrying amount	$ 7,435	8,951
Less: accumulated amortization	7,258	8,463
Net carrying amount	177	488
Identified Intangible Assets [Member]
Finite-Lived Intangible Assets [Abstract]
Gross carrying amount	25,025	27,057
Less: accumulated amortization	16,275	15,810
Net carrying amount	$ 8,750	$ 11,247

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- Definition

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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