Fair Value of Financial Instruments (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Investment securities - AFS	$ 208,187	$ 119,976	$ 31,600
Investment securities - HTM		93,745
Equity securities carried at fair value through income	4,669	4,428
Non-marketable equity securities in other financial institutions	209	209
FHLB Stock	3,447	3,821
Loans Receivable	1,424,506	1,298,465
Accrued Interest Receivable	5,019	4,957
Investment in BOLI	37,180	36,295
Liabilities
Savings, NOW and money market accounts	1,117,668	982,600
Time deposits	396,492	446,683
Short-term borrowings	5,007	35,016
Long-term debt	40,588	20,568
TRUPs	10,129	10,924
Subordinated notes	23,031	23,085
Fair Value, Inputs, Level 1 [Member]
Assets
Investment securities - AFS
Investment securities - HTM		999
Equity securities carried at fair value through income
Non-marketable equity securities in other financial institutions
FHLB Stock
Loans Receivable
Accrued Interest Receivable
Investment in BOLI
Liabilities
Savings, NOW and money market accounts
Time deposits
Short-term borrowings
Long-term debt
TRUPs
Subordinated notes
Fair Value, Inputs, Level 2 [Member]
Assets
Investment securities - AFS	208,187	119,976
Investment securities - HTM		92,746
Equity securities carried at fair value through income	4,669	4,428
Non-marketable equity securities in other financial institutions	209	209
FHLB Stock	3,447	3,821
Loans Receivable
Accrued Interest Receivable	5,019	4,957
Investment in BOLI	37,180	36,295
Liabilities
Savings, NOW and money market accounts	1,117,668	982,600
Time deposits	396,492	446,683
Short-term borrowings	5,007	35,016
Long-term debt	40,588	20,568
TRUPs	10,129	10,924
Subordinated notes	23,031	23,085
Fair Value, Inputs, Level 3 [Member]
Assets
Investment securities - AFS
Investment securities - HTM
Equity securities carried at fair value through income
Non-marketable equity securities in other financial institutions
FHLB Stock
Loans Receivable	1,424,506	1,298,465
Accrued Interest Receivable
Investment in BOLI
Liabilities
Savings, NOW and money market accounts
Time deposits
Short-term borrowings
Long-term debt
TRUPs
Subordinated notes
Carrying Amount [Member]
Assets
Investment securities - AFS	208,187	119,976
Investment securities - HTM		96,271
Equity securities carried at fair value through income	4,669	4,428
Non-marketable equity securities in other financial institutions	209	209
FHLB Stock	3,447	3,821
Loans Receivable	1,445,109	1,337,129
Accrued Interest Receivable	5,019	4,957
Investment in BOLI	37,180	36,295
Liabilities
Savings, NOW and money market accounts	1,117,668	982,600
Time deposits	394,169	447,029
Short-term borrowings	5,000	35,000
Long-term debt	40,370	20,436
TRUPs	12,000	12,000
Subordinated notes	$ 23,000	$ 23,000