Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 57,518	$ 70,672	$ 63,401
Other Comprehensive Income (Loss), Net of Tax:
Unrealized gains (losses) on securities available for sale	10,338	10,718	(3,507)
Reclassification for securities gains included in net income	(872)	0	0
Unrealized (losses) gains on derivatives	(292)	(586)	41
Change in pension liability, net	(25)	(46)	20
Other comprehensive income (loss)	9,149	10,086	(3,446)
Total Comprehensive Income	$ 66,667	$ 80,758	$ 59,955