Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	$ 448,880	$ 415,852
Securities available for sale, Unrealized Gains	20,579	3,696
Securities available for sale, Unrealized Losses	46	1,631
Securities available for sale	469,413	417,917
Securities held to maturity, Amortized Cost	309,880	359,000
Securities held to maturity, Unrealized Gains	11,074	4,882
Securities held to maturity, Unrealized Losses		623
Securities held to maturity, fair value	320,954	363,259
Allowance for credit losses, Amortized Cost	(8)
Held-to-maturity securities, net , Amortized Cost	309,872	359,000
U.S. Government Agency And Government Sponsored Enterprises [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	6,229	26,440
Securities available for sale, Unrealized Gains	441	437
Securities available for sale	6,670	26,877
State And Political Subdivisions [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities held to maturity, Amortized Cost	159,530	192,215
Securities held to maturity, Unrealized Gains	5,075	3,803
Securities held to maturity, fair value	164,605	196,018
Collateralized Mortgage Obligations [Member] \| Federal National Mortgage Association [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	21,596	23,834
Securities available for sale, Unrealized Gains	328
Securities available for sale, Unrealized Losses		57
Securities available for sale	21,924	23,777
Securities held to maturity, Amortized Cost	36,547	41,561
Securities held to maturity, Unrealized Gains	1,252	150
Securities held to maturity, Unrealized Losses		256
Securities held to maturity, fair value	37,799	41,455
Collateralized Mortgage Obligations [Member] \| Federal Home Loan Mortgage Corporation [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	4,647	4,907
Securities available for sale, Unrealized Losses	3	18
Securities available for sale	4,644	4,889
Securities held to maturity, Amortized Cost	43,715	49,389
Securities held to maturity, Unrealized Gains	1,927	307
Securities held to maturity, Unrealized Losses		103
Securities held to maturity, fair value	45,642	49,593
Collateralized Mortgage Obligations [Member] \| Government National Mortgage Association [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities held to maturity, Amortized Cost	9,747	11,033
Securities held to maturity, Unrealized Gains	335	12
Securities held to maturity, Unrealized Losses		83
Securities held to maturity, fair value	10,082	10,962
Collateralized Mortgage Obligations [Member] \| Privately Issued [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Unrealized Gains	442	618
Securities available for sale	442	618
Mortgage-Backed Securities [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	442,651	389,412
Securities available for sale, Unrealized Gains	20,138	3,259
Securities available for sale, Unrealized Losses	46	1,631
Securities available for sale	462,743	391,040
Securities held to maturity, Amortized Cost	150,350	166,785
Securities held to maturity, Unrealized Gains	5,999	1,079
Securities held to maturity, Unrealized Losses		623
Securities held to maturity, fair value	156,349	167,241
Mortgage-Backed Securities [Member] \| Federal National Mortgage Association [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	287,014	293,873
Securities available for sale, Unrealized Gains	15,623	2,263
Securities available for sale, Unrealized Losses	29	1,380
Securities available for sale	302,608	294,756
Securities held to maturity, Amortized Cost	11,829	12,049
Securities held to maturity, Unrealized Gains	708	227
Securities held to maturity, Unrealized Losses		6
Securities held to maturity, fair value	12,537	12,270
Mortgage-Backed Securities [Member] \| Federal Home Loan Mortgage Corporation [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	105,422	52,733
Securities available for sale, Unrealized Gains	2,905	318
Securities available for sale, Unrealized Losses	14	172
Securities available for sale	108,313	52,879
Securities held to maturity, Amortized Cost	6,510	6,995
Securities held to maturity, Unrealized Gains	360	77
Securities held to maturity, Unrealized Losses		47
Securities held to maturity, fair value	6,870	7,025
Mortgage-Backed Securities [Member] \| Government National Mortgage Association [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	23,972	14,065
Securities available for sale, Unrealized Gains	840	60
Securities available for sale, Unrealized Losses		4
Securities available for sale	24,812	14,121
Securities held to maturity, Amortized Cost	42,002	45,758
Securities held to maturity, Unrealized Gains	1,417	306
Securities held to maturity, Unrealized Losses		128
Securities held to maturity, fair value	$ 43,419	$ 45,936

Allowance for credit losses, amortized cost.

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Debt securities available for sale and held to maturity securities.

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Held-to-maturity securities, net.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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