Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Assets [Abstract]
Investment Securities Available-for-Sale	$ 569,407	$ 507,386	$ 488,093
Carrying Amount [Member]
Assets [Abstract]
Cash and Cash Equivalents	371,439	294,758	114,717
Investment Securities Available-for-Sale	569,407	507,386	488,093
Investment Securities Held-to-Maturity	69,036	60,229	60,310
Loans & Leases, Net of Deferred Fees & Allowance	3,009,454	2,618,015	2,543,773
Accrued Interest Receivable	18,083	16,733	15,688
Liabilities [Abstract]
Deposits	3,782,033	3,278,019	3,025,276
Subordinated Debentures	10,310	10,310	10,310
Accrued Interest Payable	2,183	2,795	2,465
Estimated Fair Value [Member]
Assets [Abstract]
Cash and Cash Equivalents	371,439	294,758	114,717
Investment Securities Available-for-Sale	569,407	507,386	488,093
Investment Securities Held-to-Maturity	70,194	61,097	61,154
Loans & Leases, Net of Deferred Fees & Allowance	3,001,079	2,584,805	2,527,799
Accrued Interest Receivable	18,083	16,733	15,688
Liabilities [Abstract]
Deposits	3,783,961	3,277,269	3,023,376
Subordinated Debentures	6,936	7,325	7,431
Accrued Interest Payable	2,183	2,795	2,465
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and Cash Equivalents	371,439	294,758	114,717
Investment Securities Available-for-Sale	80,691	55,200	175,111
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	3,250,311	2,760,097	2,505,769
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	488,716	452,186	308,683
Investment Securities Held-to-Maturity	28,893	31,253	35,400
Loans & Leases, Net of Deferred Fees & Allowance	0	0	0
Accrued Interest Receivable	18,083	16,733	15,688
Liabilities [Abstract]
Deposits	533,650	517,172	517,607
Subordinated Debentures	6,936	7,325	7,431
Accrued Interest Payable	2,183	2,795	2,465
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	4,299
Investment Securities Held-to-Maturity	41,301	29,844	25,754
Loans & Leases, Net of Deferred Fees & Allowance	3,001,079	2,584,805	2,527,799
Accrued Interest Receivable	0	0	0
Liabilities [Abstract]
Deposits	0	0	0
Subordinated Debentures	0	0	0
Accrued Interest Payable	$ 0	$ 0	$ 0