Loans and Allowance for Credit Losses (Changes in Carrying Amount of Purchased Credit Impaired Loans and Related Accretable Yield) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Receivables [Abstract]
Carrying Amount of Loans, Balance at beginning of period	$ 129,596
Carrying Amount of Loans, Additions	120,562
Carrying Amount of Loans, Payments received, net	(48,076)
Carrying Amount of Loans, Accretion	13,163
Carrying Amount of Loans, Balance at end of period	215,245
Accretable Yield, Balance at beginning of period	37,294
Accretable Yield, Additions	6,246
Accretable Yield, Payments received, net	(4,601)
Accretable Yield, Accretion	(13,163)
Accretable Yield, Decrease in expected cash flows based on actual cash flows and changes in cash flow assumptions	4,170
Accretable Yield, Balance at end of period	$ 29,946