Deposits - Maturity Distribution of Time Certificates of Deposits (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Maturity distribution of time certificates of deposit
Three months or less	$ 634,261
Over three through six months	725,002
Over six through twelve months	823,337
One to two years	257,314
Two to three years	73,742
Three to four years	40,268
Four to five years	32,613
Thereafter	865
Total	2,587,402
Under $250,000
Maturity distribution of time certificates of deposit
Three months or less	186,517
Over three through six months	141,036
Over six through twelve months	395,557
One to two years	185,920
Two to three years	57,854
Three to four years	36,343
Four to five years	24,169
Thereafter	865
Total	1,028,261
$250,000 or More
Maturity distribution of time certificates of deposit
Three months or less	447,744
Over three through six months	583,966
Over six through twelve months	427,780
One to two years	71,394
Two to three years	15,888
Three to four years	3,925
Four to five years	8,444
Total	$ 1,559,141