Fair Value Disclosures (Fair Value by Balance Sheet Groupings) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Cash and cash equivalents, carrying amount	$ 40,293	$ 52,539	$ 73,196	$ 77,517
Securities available-for-sale, carrying amount	134,995	126,005
Securities held-to-maturity, carrying amount	39,950	37,778
Loans held for sale, carrying amount	4,712	2,194
Loans and leases receivable, net amount, carrying amount	1,578,152	1,482,832
Federal Home Loan Bank and Federal Reserve Bank stock, carrying amount	6,890	5,670
Accrued interest receivable, carrying amount	5,678	5,019
Interest rate swaps - assets, carrying amount	2,470	942
Cash and cash equivalents, fair value	40,293	52,539
Securities available-for-sale, fair value	134,995	126,005
Held-to-maturity Securities, fair value	39,130	37,696
Loans Held-for-sale, Fair Value Disclosure	5,183	2,413
Loans and lease receivables, net, fair value	1,569,571	1,482,664
Accrued interest receivable, fair value	5,678	5,019
Interest rate swaps - assets, fair value	2,470	942
Financial liabilities:
Deposits, carrying amount	1,408,903	1,394,331
Federal Home Loan Bank and other borrowings, carrying amount	281,430	207,898
Junior subordinated notes, carrying amount	10,029	10,019
Accrued interest payable, carrying amount	3,407	2,095
Standby letters of credit, carrying amount	53	75
Deposits, fair value	1,405,963	1,391,801
Federal Home Loan Bank and other borrowings fair value	276,601	206,441
Junior subordinated notes, fair value	9,951	8,836
Accrued interest payable, fair value	3,407	2,095
Interest Rate Derivative Instruments, Both Hedging and Not Designated as Hedging, Liability at Fair Value, Fair Value Disclosure	1,180	1,064
Standby letters of credit, fair value	53	75
Fair Value Measurements - Level 1 Inputs
Financial assets:
Cash and cash equivalents, fair value	26,993	35,114
Securities available-for-sale, fair value	0	0
Held-to-maturity Securities, fair value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans and lease receivables, net, fair value	0	0
Accrued interest receivable, fair value	5,678	5,019
Interest rate swaps - assets, fair value	0	0
Financial liabilities:
Deposits, fair value	965,540	1,010,147
Federal Home Loan Bank and other borrowings fair value	0	0
Junior subordinated notes, fair value	0	0
Accrued interest payable, fair value	3,407	2,095
Interest Rate Derivative Instruments, Both Hedging and Not Designated as Hedging, Liability at Fair Value, Fair Value Disclosure	0	0
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 2 Inputs
Financial assets:
Cash and cash equivalents, fair value	13,300	17,425
Securities available-for-sale, fair value	134,995	126,005
Held-to-maturity Securities, fair value	39,130	37,696
Loans Held-for-sale, Fair Value Disclosure	5,183	2,413
Loans and lease receivables, net, fair value	20,260	10,063
Accrued interest receivable, fair value	0	0
Interest rate swaps - assets, fair value	2,470	942
Financial liabilities:
Deposits, fair value	440,423	381,654
Federal Home Loan Bank and other borrowings fair value	276,601	206,441
Junior subordinated notes, fair value	0	0
Accrued interest payable, fair value	0	0
Interest Rate Derivative Instruments, Both Hedging and Not Designated as Hedging, Liability at Fair Value, Fair Value Disclosure	1,180	1,064
Standby letters of credit, fair value	0	0
Fair Value Measurements - Level 3 Inputs
Financial assets:
Cash and cash equivalents, fair value	0	0
Securities available-for-sale, fair value	0	0
Held-to-maturity Securities, fair value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans and lease receivables, net, fair value	1,549,311	1,472,601
Accrued interest receivable, fair value	0	0
Interest rate swaps - assets, fair value	0	0
Financial liabilities:
Deposits, fair value	0	0
Federal Home Loan Bank and other borrowings fair value	0	0
Junior subordinated notes, fair value	9,951	8,836
Accrued interest payable, fair value	0	0
Interest Rate Derivative Instruments, Both Hedging and Not Designated as Hedging, Liability at Fair Value, Fair Value Disclosure	0	0
Standby letters of credit, fair value	53	75
Fair Value, Measurements, Recurring [Member] \| Interest rate swaps
Financial liabilities:
Derivative Liability	1,180	1,064
Fair Value, Measurements, Recurring [Member] \| Interest rate swaps \| Fair Value Measurements - Level 1 Inputs
Financial liabilities:
Derivative Liability	0	0
Fair Value, Measurements, Recurring [Member] \| Interest rate swaps \| Fair Value Measurements - Level 2 Inputs
Financial liabilities:
Derivative Liability	1,180	1,064
Fair Value, Measurements, Recurring [Member] \| Interest rate swaps \| Fair Value Measurements - Level 3 Inputs
Financial liabilities:
Derivative Liability	$ 0	$ 0

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