Goodwill and Intangible Assets, Summary of Core Deposit and Other Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of core deposit intangibles and other intangibles
Amortization of other intangible assets	$ 8,844	$ 10,192	$ 9,948
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Summary of core deposit intangibles and other intangibles
Reductions due to sale	(1,317)	(17,435)	(217)
Core Deposits [Member]
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of the year		88,109	80,730	$ 58,100
Accumulated amortization	(30,016)	(21,205)	(12,456)
Total Estimated Amortization Expense	58,093	66,904	68,274
Amortization of other intangible assets	8,811	8,749	7,130
Adjustments to Core Deposits [Member]
Summary of core deposit intangibles and other intangibles
Additions during the year	0	7,379	22,630
Other Intangible Assets [Member]
Summary of core deposit intangibles and other intangibles
Gross carrying amount at the beginning of the year		2,000	38,970	$ 44,887
Additions during the year	0	200	0
Accumulated amortization	(683)	(20,385)	(24,643)
Total Estimated Amortization Expense	0	1,350	20,027
Amortization of other intangible assets	$ 33	$ 1,443	$ 2,818