Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity
Balance	$ 2,624,389	$ 2,324,032
Other comprehensive income before reclassifications	94	(629)
Reclassification adjustment of unrealized gains (losses) on securities transferred from held-to-maturity	0	(27)
Reclassification adjustment for net (gain) loss on sale of available-for-sale securities, included in net income	0	(41)
Other comprehensive income (loss), net of tax	94	(697)
Balance	2,686,133	2,387,734
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Balance	(844)	(46)
Other comprehensive income (loss), net of tax	94
Balance	(750)	(743)
Unrealized Loss On Available-for-Sale Securities
Increase (Decrease) in Stockholders' Equity
Balance	(844)	(46)
Other comprehensive income before reclassifications	94	(629)
Reclassification adjustment of unrealized gains (losses) on securities transferred from held-to-maturity	0	(27)
Reclassification adjustment for net (gain) loss on sale of available-for-sale securities, included in net income	0	(41)
Other comprehensive income (loss), net of tax	94	(697)
Balance	(750)	(743)
Other
Increase (Decrease) in Stockholders' Equity
Balance	0	0
Other comprehensive income before reclassifications	0	0
Reclassification adjustment of unrealized gains (losses) on securities transferred from held-to-maturity	0	0
Reclassification adjustment for net (gain) loss on sale of available-for-sale securities, included in net income	0	0
Other comprehensive income (loss), net of tax	0	0
Balance	$ 0	$ 0