Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 32,082	$ 40,536
Unrealized gains and losses on available for sale debt securities:
Net unrealized (losses) gains arising during the period	(9,957)	20,864
Reclassification adjustment for gains included in net income	0	0
Total	(9,957)	20,864
Unrealized gains and losses on derivatives:
Net unrealized gains (losses) arising during the period	3,385	(616)
Reclassification adjustment for gains included in net income	(3,069)	(3,080)
Total	316	(3,696)
Amortization related to post-retirement obligations	(829)	(269)
Total other comprehensive (loss) income	(10,470)	16,899
Total comprehensive income	$ 21,612	$ 57,435