Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Assets [Abstract]
Investment Securities Available-for-Sale	$ 532,246	$ 507,386	$ 491,289
Carrying Amount [Member]
Assets [Abstract]
Cash and Cash Equivalents	282,960	294,758	97,810
Investment Securities Available-for-Sale	532,246	507,386	491,289
Investment Securities Held-to-Maturity	58,701	60,229	54,412
Loans & Leases, Net	2,615,285	2,618,015	2,509,061
Accrued Interest Receivable	12,541	16,733	12,524
Liabilities [Abstract]
Deposits	3,255,273	3,278,019	3,008,040
Subordinated Debentures	10,310	10,310	10,310
Accrued Interest Payable	2,430	2,795	2,193
Estimated Fair Value [Member]
Assets [Abstract]
Cash and Cash Equivalents	282,960	294,758	97,810
Investment Securities Available-for-Sale	532,246	507,386	491,289
Investment Securities Held-to-Maturity	59,503	61,097	54,981
Loans & Leases, Net	2,605,120	2,584,805	2,490,197
Accrued Interest Receivable	12,541	16,733	12,524
Liabilities [Abstract]
Deposits	3,257,538	3,277,269	3,004,579
Subordinated Debentures	7,415	7,325	7,600
Accrued Interest Payable	2,430	2,795	2,193
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and Cash Equivalents	282,960	294,758	97,810
Investment Securities Available-for-Sale	20,606	55,200	164,877
Investment Securities Held-to-Maturity	0	0	0
Loans & Leases, Net	0	0	0
Accrued Interest Receivable	0	0	0
Liabilities [Abstract]
Deposits	2,733,525	2,760,097	2,483,258
Subordinated Debentures	0	0	0
Accrued Interest Payable	0	0	0
Estimated Fair Value [Member] | Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0	0
Investment Securities Available-for-Sale	511,640	452,186	321,769
Investment Securities Held-to-Maturity	29,296	31,253	36,705
Loans & Leases, Net	0	0	0
Accrued Interest Receivable	12,541	16,733	12,524
Liabilities [Abstract]
Deposits	524,013	517,172	521,321
Subordinated Debentures	7,415	7,325	7,600
Accrued Interest Payable	2,430	2,795	2,193
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0	0
Investment Securities Available-for-Sale	0	0	4,643
Investment Securities Held-to-Maturity	30,207	29,844	18,276
Loans & Leases, Net	2,605,120	2,584,805	2,490,197
Accrued Interest Receivable	0	0	0
Liabilities [Abstract]
Deposits	0	0	0
Subordinated Debentures	0	0	0
Accrued Interest Payable	$ 0	$ 0	$ 0