Business Combinations - RPS - Purchased assets and assumed liabilities at fair value (Details) - USD ($) $ in Thousands	Dec. 18, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 17, 2020
Assets
Cash and cash equivalents		$ 58,242	$ 242,311
Land premises and equipment, net		17,288	18,370
Other intangible assets		22,455	20,250
Other assets		75,712	42,708
Total assets		3,779,637	3,392,691	$ 3,013,771
Liabilities
Total liabilities		3,422,765	3,033,288
Liabilities
Goodwill		$ 47,087	$ 31,490
Retirement Planning Services, Inc
Fair Value Adjustments
Land premises and equipment, net	$ (16)
Other intangible assets	11,390
Other assets	(38)
Total assets	11,336
Other liabilities	3,930
Total liabilities	3,930
Excess assets over liabilities	7,406
Assets
Cash and cash equivalents	513
Other intangible assets	11,489
Other assets	266
Total assets	12,268
Liabilities
Other liabilities	5,348
Total liabilities	5,348
Excess assets over liabilities	6,920
Cash paid for RPS	9,792
Goodwill	$ 2,872
Retirement Planning Services, Inc
Assets
Cash and cash equivalents					$ 513
Land premises and equipment, net					16
Other intangible assets					99
Other assets					304
Total assets					932
Liabilities
Other liabilities					1,418
Total liabilities					1,418
Excess assets over liabilities					$ (486)