Business Combination - Unaudited financial information (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Actual from acquisition date
Net interest Income	$ 4,159
Non-Interest Income (loss)	(96)
Non-Interest Expense	1,657
Income Taxes	706
Net Income	2,256
Unaudited Proforma Information
Net interest Income		$ 220,153	$ 186,894
Non-Interest Income (loss)		12,142	10,570
Non-Interest Expense		140,979	125,211
Income Taxes		16,084	16,025
Net Income		52,659	53,973
Loss on sale of securities	$ (300)	$ (701)	$ (15)	$ (1,920)