Comprehensive Income (Loss) OCI Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Change in fair value of debt securities, pre tax	$ 17,841	$ 15,330
Change in fair value of debt securities, tax (expense) benefit	(3,958)	(3,422)
Change in fair value of debt securities, after tax amount	13,883	11,908
Less: net security gains (losses) reclassified into non-interest income, pre tax	227	146
Less: net security gains (losses) reclassified into non-interest income, tax (expense) benefit	(50)	(32)
Less: net security gains (losses) reclassified into non-interest income, after tax amount	177	114
Net change in fair value of debt securities, pre tax	17,614	15,184
Net change in fair value of debt securities, tax expense (benefit)	(3,908)	(3,390)
Net change in fair value of debt securities, after tax	13,706	11,794	$ (1,700)
Change in fair value of cash flow hedges, pre tax	(3,328)	0
Change in fair value of cash flow hedges, tax expense (benefit)	935	0
Change in fair value of cash flow hedges, after tax amount	(2,393)	0
Less: net cash flow hedges gains (losses) reclassified into interest expense, pre tax	(514)	0
Less: net cash flow hedges gains (losses) reclassified into interest expense, tax expense (benefit)	144	0
Less: net cash flow hedges gains (losses) reclassified into interest expense, after tax amount	(370)	0
Net change in fair value of cash flow hedges, pre tax	(2,814)	0
Net change in fair value of cash flow hedges, tax expense (benefit)	791	0
Net change in fair value of cash flow hedges	(2,023)	0	0
Other comprehensive income (loss), net, pre tax	14,800	15,184
Other comprehensive income (loss), net, tax expense (benefit)	(3,117)	(3,390)
Total other comprehensive income (loss), net	$ 11,683	$ 11,794	$ (1,700)