Investment Securities (Amortized Cost And Fair Value Of Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Investment [Line Items]
Securities available for sale, Amortized Cost	$ 402,297	$ 455,582
Securities available for sale, Unrealized Gains	4,894	845
Securities available for sale, Unrealized Losses	682	10,750
Securities available for sale	406,509	445,677
Securities held to maturity, Amortized Cost	398,610	446,581
Securities held to maturity, Unrealized Gains	4,349	899
Securities held to maturity, Unrealized Losses	1,554	7,899
Securities held to maturity, fair value	401,405	439,581
U.S. Government Agency And Government Sponsored Enterprises [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	109,621	155,102
Securities available for sale, Unrealized Gains	1,623
Securities available for sale, Unrealized Losses	58	3,074
Securities available for sale	111,186	152,028
State And Political Subdivisions [Member]
Investment [Line Items]
Securities held to maturity, Amortized Cost	200,274	234,845
Securities held to maturity, Unrealized Gains	3,527	876
Securities held to maturity, Unrealized Losses	19	1,211
Securities held to maturity, fair value	203,782	234,510
Collateralized Mortgage Obligations [Member] \| Federal National Mortgage Association [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	119	133
Securities available for sale, Unrealized Losses	1
Securities available for sale	118	133
Securities held to maturity, Amortized Cost	56,428	62,103
Securities held to maturity, Unrealized Gains	123	1
Securities held to maturity, Unrealized Losses	592	2,179
Securities held to maturity, fair value	55,959	59,925
Collateralized Mortgage Obligations [Member] \| Federal Home Loan Mortgage Corporation [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	35	37
Securities available for sale	35	37
Securities held to maturity, Amortized Cost	71,293	78,200
Securities held to maturity, Unrealized Gains	272
Securities held to maturity, Unrealized Losses	535	2,597
Securities held to maturity, fair value	71,030	75,603
Collateralized Mortgage Obligations [Member] \| Government National Mortgage Association [Member]
Investment [Line Items]
Securities held to maturity, Amortized Cost	15,906	17,798
Securities held to maturity, Unrealized Gains	17
Securities held to maturity, Unrealized Losses	93	535
Securities held to maturity, fair value	15,830	17,263
Collateralized Mortgage Obligations [Member] \| Privately Issued [Member]
Investment [Line Items]
Securities available for sale, Unrealized Gains	690	767
Securities available for sale	690	767
Mortgage-Backed Securities [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	292,676	300,480
Securities available for sale, Unrealized Gains	3,271	845
Securities available for sale, Unrealized Losses	624	7,676
Securities available for sale	295,323	293,649
Securities held to maturity, Amortized Cost	198,336	211,736
Securities held to maturity, Unrealized Gains	822	23
Securities held to maturity, Unrealized Losses	1,535	6,688
Securities held to maturity, fair value	197,623	205,071
Mortgage-Backed Securities [Member] \| Federal National Mortgage Association [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	251,417	258,984
Securities available for sale, Unrealized Gains	2,251	44
Securities available for sale, Unrealized Losses	367	6,325
Securities available for sale	253,301	252,703
Securities held to maturity, Amortized Cost	10,977	11,602
Securities held to maturity, Unrealized Gains	152	8
Securities held to maturity, Unrealized Losses	33	261
Securities held to maturity, fair value	11,096	11,349
Mortgage-Backed Securities [Member] \| Federal Home Loan Mortgage Corporation [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	36,290	35,962
Securities available for sale, Unrealized Gains	263	13
Securities available for sale, Unrealized Losses	256	1,275
Securities available for sale	36,297	34,700
Securities held to maturity, Amortized Cost	4,145	4,583
Securities held to maturity, Unrealized Gains	72
Securities held to maturity, Unrealized Losses	65	193
Securities held to maturity, fair value	4,152	4,390
Mortgage-Backed Securities [Member] \| Government National Mortgage Association [Member]
Investment [Line Items]
Securities available for sale, Amortized Cost	4,815	5,364
Securities available for sale, Unrealized Gains	67	21
Securities available for sale, Unrealized Losses		76
Securities available for sale	4,882	5,309
Securities held to maturity, Amortized Cost	39,587	37,450
Securities held to maturity, Unrealized Gains	186	14
Securities held to maturity, Unrealized Losses	217	923
Securities held to maturity, fair value	$ 39,556	$ 36,541

Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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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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