Goodwill and Other Intangibles and Servicing Rights - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Net book value	$ 30,807		$ 30,807		$ 35,051
Amortization during the period	2,083	$ 1,347	4,244	$ 2,771
Core deposit intangibles:
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	60,724		60,724		60,724
Accumulated amortization	(32,014)		(32,014)		(28,023)
Net book value	28,710		28,710		32,701
Additions during the period			0		19,364
Amortization during the period			3,991		6,108
Customer list intangibles:
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	5,523		5,523		5,523
Accumulated amortization	(3,426)		(3,426)		(3,173)
Net book value	$ 2,097		2,097		2,350
Amortization during the period			$ 253		$ 508