Fair Value of Financial Instruments (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Equity securities carried at fair value through income	$ 4,768	$ 4,669
Non-marketable equity securities in other financial institutions	209	209
FHLB stock	5,627	3,447
Loans receivable	1,434,088	1,424,506
Accrued Interest Receivable	5,077	5,019
Investments in BOLI	37,399	37,180
Liabilities
Savings, NOW and money market accounts	1,126,713	1,117,668
Time deposits	388,902	396,492
Short term borrowings	27,012	5,007
Long-term debt	67,435	40,588
TRUPs	9,340	10,129
Subordinated notes		23,031
Available-for-sale	214,163	208,187
Carrying Amount [Member]
Assets
Equity securities carried at fair value through income	4,768	4,669
Non-marketable equity securities in other financial institutions	209	209
FHLB stock	5,627	3,447
Loans receivable	1,477,087	1,445,109
Accrued Interest Receivable	5,077	5,019
Investments in BOLI	37,399	37,180
Liabilities
Savings, NOW and money market accounts	1,126,713	1,117,668
Time deposits	385,876	394,169
Short term borrowings	27,000	5,000
Long-term debt	67,353	40,370
TRUPs	12,000	12,000
Subordinated notes		23,000
Available-for-sale	214,163	208,187
Fair Value, Inputs, Level 2 [Member]
Assets
Equity securities carried at fair value through income	4,768	4,669
Non-marketable equity securities in other financial institutions	209	209
FHLB stock	5,627	3,447
Accrued Interest Receivable	5,077	5,019
Investments in BOLI	37,399	37,180
Liabilities
Savings, NOW and money market accounts	1,126,713	1,117,668
Time deposits	388,902	396,492
Short term borrowings	27,012	5,007
Long-term debt	67,435	40,588
TRUPs	9,340	10,129
Subordinated notes		23,031
Available-for-sale	214,163	208,187
Fair Value, Inputs, Level 3 [Member]
Assets
Loans receivable	$ 1,434,088	$ 1,424,506