Fair Value (Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial Assets:
Trading securities	$ 4,161	$ 3,799
AFS securities	1,115,813	918,118
Equity securities - bank stock, Fair Value		1,674
Loans Held-for-sale	41,557	11,854
Other Investments	11,542	13,649
Financial Liabilities:
Trading securities	4,161	3,799
Obligations of states and political subdivisions
Financial Assets:
AFS securities	127,120	118,083
Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	566,618	463,386
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Financial Assets:
AFS securities	410,454	325,905
Fair Value, Measurements, Recurring [Member]
Financial Assets:
Trading securities	4,161	3,799
Loans Held-for-sale	41,557	11,854
Financial Liabilities:
Trading securities	4,161	3,799
Junior subordinated debt interest rate swaps		8,187
Fair Value, Measurements, Recurring [Member] \| Obligations of states and political subdivisions
Financial Assets:
AFS securities	127,120	118,083
Fair Value, Measurements, Recurring [Member] \| Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	566,618	463,386
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Financial Assets:
AFS securities	410,454	325,905
Fair Value, Measurements, Recurring [Member] \| Corporate Bond Securities [Member]
Financial Assets:
AFS securities	11,621	10,744
Readily Available Market Prices (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Trading securities	4,161	3,799
Loans Held-for-sale	0	0
Financial Liabilities:
Trading securities	4,161	3,799
Readily Available Market Prices (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Financial Assets:
AFS securities		0
Readily Available Market Prices (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member] \| Corporate Bond Securities [Member]
Financial Assets:
AFS securities	0	0
Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Trading securities	0	0
Loans Held-for-sale	41,557	11,854
Financial Liabilities:
Trading securities	0	0
Junior subordinated debt interest rate swaps		8,187
Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member] \| Obligations of states and political subdivisions
Financial Assets:
AFS securities	127,120	118,083
Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member] \| Mortgage-backed securities issued or guaranteed by U.S. government sponsored enterprises [Member]
Financial Assets:
AFS securities	566,618	463,386
Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Financial Assets:
AFS securities	410,454	325,905
Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member] \| Corporate Bond Securities [Member]
Financial Assets:
AFS securities	11,621	10,744
Company Determined Fair Value (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Trading securities	0	0
Loans Held-for-sale	0	0
Financial Liabilities:
Trading securities	0	0
Company Determined Fair Value (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Financial Assets:
AFS securities		0
Company Determined Fair Value (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member] \| Corporate Bond Securities [Member]
Financial Assets:
AFS securities	0	0
Interest Rate Swap [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	39,627	17,756
Financial Liabilities:
Customer interest rate swaps	39,627	17,756
Interest Rate Swap [Member] \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	39,627	17,756
Financial Liabilities:
Customer interest rate swaps	39,627	17,756
Interest Rate Lock Commitments [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	608	480
Financial Liabilities:
Customer interest rate swaps	248	18
Interest Rate Lock Commitments [Member] \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	608	480
Financial Liabilities:
Customer interest rate swaps	248	18
Interest Rate Lock Commitments [Member] \| Company Determined Fair Value (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Customer interest rate swaps	0	0
Forward Contracts [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	311	312
Financial Liabilities:
Customer interest rate swaps	196	15
Forward Contracts [Member] \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Customer interest rate swaps	311	312
Financial Liabilities:
Customer interest rate swaps	196	15
Junior Subordinated Debt Interest Rate Swap
Financial Assets:
Derivative Asset	562
Financial Liabilities:
Junior subordinated debt interest rate swaps	10,912	8,187
Junior Subordinated Debt Interest Rate Swap \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Derivative Asset	562
Financial Liabilities:
Junior subordinated debt interest rate swaps	10,912
Junior Subordinated Debt Interest Rate Swap \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Derivative Asset	562
Financial Liabilities:
Junior subordinated debt interest rate swaps	10,912
Interest Rate Swap On Loans [Member]
Financial Assets:
Derivative Asset	5,169	483
Interest Rate Swap On Loans [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Derivative Asset	5,169	483
Interest Rate Swap On Loans [Member] \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Derivative Asset	5,169	483
Interest Rate Swap on Borrowings
Financial Liabilities:
Junior subordinated debt interest rate swaps	713
Interest Rate Swap on Borrowings \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	713
Interest Rate Swap on Borrowings \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities:
Junior subordinated debt interest rate swaps	$ 713
Other Assets [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Equity securities - bank stock, Fair Value		1,674
Other Assets [Member] \| Observable Market Data (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Assets:
Equity securities - bank stock, Fair Value		$ 1,674

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