Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Assets [Abstract]
Investment Securities Available-for-Sale	$ 491,289	$ 495,396	$ 495,814
Carrying Amount [Member]
Assets [Abstract]
Cash and Cash Equivalents	97,810	145,564	134,984
Investment Securities Available-for-Sale	491,289	495,396	495,814
Investment Securities Held-to-Maturity	54,412	53,566	53,527
Loans & Leases, Net of Deferred Fees & Allowance	2,509,061	2,515,975	2,184,406
Accrued Interest Receivable	12,524	14,098	9,237
Liabilities [Abstract]
Deposits	3,008,040	3,062,832	2,701,405
Subordinated Debentures	10,310	10,310	10,310
Accrued Interest Payable	2,193	1,365	909
Estimated Fair Value [Member]
Assets [Abstract]
Cash and Cash Equivalents	97,810	145,564	134,984
Investment Securities Available-for-Sale	491,289	495,396	495,814
Investment Securities Held-to-Maturity	54,981	53,738	53,745
Loans & Leases, Net of Deferred Fees & Allowance	2,490,197	2,485,182	2,152,504
Accrued Interest Receivable	12,524	14,098	9,237
Liabilities [Abstract]
Deposits	3,004,579	3,058,571	2,697,488
Subordinated Debentures	7,600	7,745	7,751
Accrued Interest Payable	2,193	1,365	909
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and Cash Equivalents	97,810	145,564	134,984
Investment Securities Available-for-Sale	164,877	164,716	143,609
Investment Securities Held-to-Maturity	0	0	0
Loans & Leases, Net of Deferred Fees & Allowance	0	0	0
Accrued Interest Receivable	0	0	0
Liabilities [Abstract]
Deposits	2,483,258	2,572,805	2,218,642
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	321,769	325,841	349,705
Investment Securities Held-to-Maturity	36,705	35,083	37,028
Loans & Leases, Net of Deferred Fees & Allowance	0	0	0
Accrued Interest Receivable	12,524	14,098	9,237
Liabilities [Abstract]
Deposits	521,321	485,766	478,846
Subordinated Debentures	7,600	7,745	7,751
Accrued Interest Payable	2,193	1,365	909
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0	0
Investment Securities Available-for-Sale	4,643	4,839	2,500
Investment Securities Held-to-Maturity	18,276	18,655	16,717
Loans & Leases, Net of Deferred Fees & Allowance	2,490,197	2,485,182	2,152,504
Accrued Interest Receivable	0	0	0
Liabilities [Abstract]
Deposits	0	0	0
Subordinated Debentures	0	0	0
Accrued Interest Payable	$ 0	$ 0	$ 0