Fair Values - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Carrying Value
Cash and Cash Equivalents	$ 138,529	$ 70,221	$ 61,229	$ 84,239
Available-for-Sale at Fair Value	378,186	357,334	298,812
Securities Held-to-Maturity	238,520	245,065	279,400
Equity Securities	1,689	2,063	1,850
Net Loans	2,390,556	2,364,933	2,214,835
Deposits	2,811,005	2,616,054	2,490,097
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	57,909	51,099	58,407
Federal Home Loan Bank Overnight Advances	0	130,000	74,500
Federal Home Loan Bank Term Advances	50,000	30,000	35,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Fair Value
Available-for-Sale	378,186	357,334	298,812
Securities Held-to-Maturity	242,804	249,618	280,414
Equity Securities	1,689	2,063	1,850
Carrying Amount
Carrying Value
Cash and Cash Equivalents	138,529	70,221	61,229
Available-for-Sale at Fair Value	378,186	357,334	298,812
Securities Held-to-Maturity	238,520	245,065	279,400
Equity Securities	1,689	2,063	1,850
Federal Home Loan Bank and Federal Reserve Bank Stock	5,379	10,317	7,878
Net Loans	2,390,556	2,364,933	2,214,835
Accrued Interest Receivable	7,856	7,377	8,180
Derivatives, included in other assets	5,191	69
Deposits	2,811,005	2,616,054	2,490,097
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	57,909	51,099	58,407
Federal Home Loan Bank Overnight Advances		130,000	74,500
Federal Home Loan Bank Term Advances	50,000	30,000	35,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	1,392	1,436	737
Derivatives, included in other liabilities	5,191	69
Fair Value
Available-for-Sale	378,186	357,334	298,812
Equity Securities	1,689	2,063	1,850
Derivatives, included in other assets	5,191	69
Derivatives, included in other liabilities	5,191	69
Fair Value
Carrying Value
Available-for-Sale at Fair Value	378,186	357,334	298,812
Equity Securities	1,689	2,063	1,850
Derivatives, included in other assets	5,191	69
Derivatives, included in other liabilities	5,191	69
Fair Value
Cash and Cash Equivalents	138,529	70,221	61,229
Available-for-Sale	378,186	357,334	298,812
Securities Held-to-Maturity	242,804	249,618	280,414
Equity Securities	1,689	2,063	1,850
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	5,379	10,317	7,878
Net Loans, at Fair Value	2,368,033	2,332,797	2,164,298
Accrued Interest Receivable	7,856	7,377	8,180
Derivatives, included in other assets	5,191	69
Deposits	2,811,668	2,614,170	2,484,479
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	57,909	51,099	58,407
Federal Home Loan Bank Overnight Advances		130,000	74,500
Federal Home Loan Bank Term Advances	51,194	29,993	34,805
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	1,392	1,436	737
Derivatives, included in other liabilities	5,191	69
Quoted Prices In Active Markets for Indentical Assets (Level 1) | Fair Value
Carrying Value
Available-for-Sale at Fair Value	0	0	0
Equity Securities	0		0
Derivatives, included in other assets		0
Derivatives, included in other liabilities	0	0
Fair Value
Cash and Cash Equivalents	138,529	70,221	61,229
Available-for-Sale	0	0	0
Securities Held-to-Maturity	0	0	0
Equity Securities	0		0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans, at Fair Value	0	0	0
Accrued Interest Receivable	0	0	0
Derivatives, included in other assets		0
Deposits	0	0	0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	0	0	0
Federal Home Loan Bank Overnight Advances		0	0
Federal Home Loan Bank Term Advances	0	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	0	0	0
Accrued Interest Payable	0	0	0
Derivatives, included in other liabilities	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Carrying Value
Available-for-Sale at Fair Value	378,186	357,334	298,812
Equity Securities	1,689	2,063	1,850
Derivatives, included in other assets	5,191	69
Derivatives, included in other liabilities	5,191	69
Fair Value
Cash and Cash Equivalents	0	0	0
Available-for-Sale	378,186	357,334	298,812
Securities Held-to-Maturity	242,804	249,618	280,414
Equity Securities	1,689	2,063	1,850
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	5,379	10,317	7,878
Net Loans, at Fair Value	0	0	0
Accrued Interest Receivable	7,856	7,377	8,180
Derivatives, included in other assets	5,191	69
Deposits	2,811,668	2,614,170	2,484,479
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	57,909	51,099	58,407
Federal Home Loan Bank Overnight Advances		130,000	74,500
Federal Home Loan Bank Term Advances	51,194	29,993	34,805
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	1,392	1,436	737
Derivatives, included in other liabilities	5,191	69
Significant Unobservable Inputs (Level 3) | Fair Value
Carrying Value
Available-for-Sale at Fair Value	0	0	0
Equity Securities	0
Derivatives, included in other assets		0
Derivatives, included in other liabilities	0	0
Fair Value
Cash and Cash Equivalents	0	0	0
Available-for-Sale	0	0	0
Securities Held-to-Maturity	0	0	0
Equity Securities	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans, at Fair Value	2,368,033	2,332,797	2,164,298
Accrued Interest Receivable	0	0	0
Derivatives, included in other assets		0
Deposits	0	0	0
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	0	0	0
Federal Home Loan Bank Overnight Advances		0	0
Federal Home Loan Bank Term Advances	0	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	0	0	0
Accrued Interest Payable	0	0	$ 0
Derivatives, included in other liabilities	$ 0	$ 0