Investment Securities Available for Sale (Details) $ in Thousands	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	$ 334,291	$ 401,278	$ 392,858
Available-for-Sale	339,190	402,309	397,559
Gross Unrealized Gains	5,103	2,717	4,921
Gross Unrealized Losses	204	1,686	221
Available-For-Sale Securities, Pledged as Collateral	277,832	310,857	348,115
Maturities of Debt Securities, at Amortized Cost
Within One Year	31,517
From 1 - 5 Years	295,158
From 5 - 10 Years	4,878
Over 10 Years	1,618
Maturities of Debt Securities at Fair Value
Within One Year	31,597
From 1 - 5 Years	299,598
From 5 - 10 Years	5,322
Over 10 Years	1,423
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	10,259	184,276	0
12 Months or Longer	1,800	13,017	25,339
Total	$ 12,059	$ 197,293	$ 25,339
Number of Securities in a Continuous Loss Position, in number of securities	6	89	16
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 4	$ 1,440	$ 0
12 Months or Longer	200	246	221
Total	204	1,686	221
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Gains	1,415	264	1,269
Gross Unrealized Losses	0	414	4
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	152,511
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	0
From 1 - 5 Years	153,926
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	76,802	0
12 Months or Longer	0	0	12,996
Total	$ 0	$ 76,802	$ 12,996
Number of Securities in a Continuous Loss Position, in number of securities	0	21	3
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 413	$ 0
12 Months or Longer	0	1	4
Total	0	414	4
U.S. Agency Obligations [Member] | U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	152,511	155,932	161,253
Available-for-Sale		155,782	162,518
State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	31,562	52,306	55,263
Available-for-Sale		52,408	55,486
Gross Unrealized Gains	69	105	223
Gross Unrealized Losses	3	3	0
Maturities of Debt Securities, at Amortized Cost
Within One Year	19,303
From 1 - 5 Years	11,191
From 5 - 10 Years	508
Over 10 Years	560
Maturities of Debt Securities at Fair Value
Within One Year	19,304
From 1 - 5 Years	11,256
From 5 - 10 Years	508
Over 10 Years	560
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	9,237	4,289	0
12 Months or Longer	0	1,443	406
Total	$ 9,237	$ 5,732	$ 406
Number of Securities in a Continuous Loss Position, in number of securities	1	19	1
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 3	$ 2	$ 0
12 Months or Longer	0	1	0
Total	3	3	0
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	144,598	177,376	158,351
Available-for-Sale		178,588	161,637
Gross Unrealized Gains	3,489	2,236	3,292
Gross Unrealized Losses	0	1,024	6
Maturities of Debt Securities, at Amortized Cost
Within One Year	10,214
From 1 - 5 Years	129,956
From 5 - 10 Years	4,370
Over 10 Years	58
Maturities of Debt Securities at Fair Value
Within One Year	10,294
From 1 - 5 Years	132,916
From 5 - 10 Years	4,814
Over 10 Years	63
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	99,569	0
12 Months or Longer	0	903	4,775
Total	$ 0	$ 100,472	$ 4,775
Number of Securities in a Continuous Loss Position, in number of securities	2	30	1
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 1,023	$ 0
12 Months or Longer	0	1	6
Total	0	1,024	6
Mortgage-Backed Securities - Residential [Member] | Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	148,087
Mortgage-Backed Securities - Residential [Member] | U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	10,849	15,700	27,500
Available-for-Sale	11,003	15,845	28,100
Mortgage-Backed Securities - Residential [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	133,749	161,676	130,800
Available-for-Sale	137,084	162,743	133,500
Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	4,500	14,544	16,871
Available-for-Sale		14,299	16,672
Gross Unrealized Gains	0	0	12
Gross Unrealized Losses	201	245	211
Maturities of Debt Securities, at Amortized Cost
Within One Year	2,000
From 1 - 5 Years	1,500
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities at Fair Value
Within One Year	1,999
From 1 - 5 Years	1,500
From 5 - 10 Years	0
Over 10 Years	800
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	1,022	3,616	0
12 Months or Longer	1,800	10,671	7,162
Total	$ 2,822	$ 14,287	$ 7,162
Number of Securities in a Continuous Loss Position, in number of securities	3	19	11
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 1	$ 2	$ 0
12 Months or Longer	200	243	211
Total	201	245	211
Mutual Funds and Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	1,120	1,120	1,120
Available-for-Sale		1,232	1,246
Gross Unrealized Gains	130	112	125
Gross Unrealized Losses	0	0	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	0	0
12 Months or Longer	0	0	0
Total	$ 0	$ 0	$ 0
Number of Securities in a Continuous Loss Position, in number of securities	0	0	0
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 0	$ 0
12 Months or Longer	0	0	0
Total	0	0	0
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	339,190	402,309	397,559
Fair Value, Measurements, Recurring [Member] | U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale		155,782	162,518
Fair Value, Measurements, Recurring [Member] | U.S. Agency Obligations [Member] | U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	153,926
Fair Value, Measurements, Recurring [Member] | State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	31,628	52,408	55,486
Fair Value, Measurements, Recurring [Member] | Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	4,299	14,299	16,672
Fair Value, Measurements, Recurring [Member] | Mutual Funds and Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	$ 1,250	$ 1,232	$ 1,246