Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets [Abstract]
Investment Securities Available-for-Sale	$ 495,396	$ 481,596
Carrying Amount [Member]
Assets [Abstract]
Cash and Cash Equivalents	145,564	187,149
Investment Securities Available-for-Sale	495,396	481,596
Investment Securities Held-to-Maturity	53,566	54,460
FHLB Stock	12,636	10,342
Loans & Leases, Net of Deferred Fees & Allowance	2,515,975	2,164,953
Accrued Interest Receivable	14,098	10,999
Liabilities [Abstract]
Deposits	3,062,832	2,723,228
Subordinated Debentures	10,310	10,310
Accrued Interest Payable	1,365	1,137
Estimated Fair Value [Member]
Assets [Abstract]
Cash and Cash Equivalents	145,564	187,149
Investment Securities Available-for-Sale	495,396	481,596
Investment Securities Held-to-Maturity	53,738	55,236
Loans & Leases, Net of Deferred Fees & Allowance	2,485,182	2,137,987
Accrued Interest Receivable	14,098	10,999
Liabilities [Abstract]
Deposits	3,058,571	2,720,502
Subordinated Debentures	7,745	7,428
Accrued Interest Payable	1,365	1,137
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and Cash Equivalents	145,564	187,149
Investment Securities Available-for-Sale	164,716	144,364
Investment Securities Held-to-Maturity	0	0
Loans & Leases, Net of Deferred Fees & Allowance	0	0
Accrued Interest Receivable	0	0
Liabilities [Abstract]
Deposits	2,572,805	2,247,831
Subordinated Debentures	0	0
Accrued Interest Payable	0	0
Estimated Fair Value [Member] | Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0
Investment Securities Available-for-Sale	325,841	334,732
Investment Securities Held-to-Maturity	35,083	38,492
Loans & Leases, Net of Deferred Fees & Allowance	0	0
Accrued Interest Receivable	14,098	10,999
Liabilities [Abstract]
Deposits	485,766	472,671
Subordinated Debentures	7,745	7,428
Accrued Interest Payable	1,365	1,137
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0
Investment Securities Available-for-Sale	4,839	2,500
Investment Securities Held-to-Maturity	18,655	16,744
Loans & Leases, Net of Deferred Fees & Allowance	2,485,182	2,137,987
Accrued Interest Receivable	0	0
Liabilities [Abstract]
Deposits	0	0
Subordinated Debentures	0	0
Accrued Interest Payable	$ 0	$ 0