Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid during the period for:
Interest	$ 3,483	$ 10,551
Income Taxes Paid, Net	32	80
Non-cash investing and financing activities:
Loans Transferred to Other Real Estate Owned and Repossessions	944	1,961
Fair value of loans transferred from held to maturity to held for sale	17,749	10,858
Transfer of Loans Held-for-sale to Portfolio Loans	0	385
Gross (decrease) increase in market value adjustment to securities available for sale	(15,810)	19,484
Gross increase (decrease) in market value adjustment to derivatives	(1,842)	(4,581)
Stock Issued During Period, Value, Treasury Stock Reissued	2,041	1,594
Unsettled Bank Owned Life Insurance Proceeds	$ (384)	$ (356)