Investment Securities Available for Sale (Details) $ in Thousands	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	$ 356,910	$ 401,278	$ 388,009
Available-for-Sale	362,929	402,309	391,817
Gross Unrealized Gains	6,223	2,717	4,385
Gross Unrealized Losses	204	1,686	576
Available-For-Sale Securities, Pledged as Collateral	267,912	310,857	289,418
Maturities of Debt Securities, at Amortized Cost
Within One Year	34,040
From 1 - 5 Years	309,193
From 5 - 10 Years	10,997
Over 10 Years	1,560
Maturities of Debt Securities at Fair Value
Within One Year	34,178
From 1 - 5 Years	314,645
From 5 - 10 Years	11,515
Over 10 Years	1,360
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	710	184,276	0
12 Months or Longer	2,537	13,017	109,641
Total	$ 3,247	$ 197,293	$ 109,641
Number of Securities in a Continuous Loss Position, in number of securities	6	89	96
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 4	$ 1,440	$ 0
12 Months or Longer	200	246	576
Total	204	1,686	576
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Gains	2,131	264	788
Gross Unrealized Losses	0	414	99
Maturities of Debt Securities, at Amortized Cost
Within One Year	0
From 1 - 5 Years	155,859
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	0
From 1 - 5 Years	157,990
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	35,149
Total	$ 0	$ 76,802	$ 35,149
Number of Securities in a Continuous Loss Position, in number of securities	0	21	10
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 413	$ 0
12 Months or Longer	0	1	99
Total	0	414	99
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	155,859	155,932	156,248
Available-for-Sale		155,782	156,937
State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	36,256	52,306	59,230
Available-for-Sale		52,408	59,303
Gross Unrealized Gains	169	105	117
Gross Unrealized Losses	0	3	43
Maturities of Debt Securities, at Amortized Cost
Within One Year	20,424
From 1 - 5 Years	14,724
From 5 - 10 Years	548
Over 10 Years	560
Maturities of Debt Securities at Fair Value
Within One Year	20,459
From 1 - 5 Years	14,858
From 5 - 10 Years	548
Over 10 Years	560
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	4,289	0
12 Months or Longer	256	1,443	16,401
Total	$ 256	$ 5,732	$ 16,401
Number of Securities in a Continuous Loss Position, in number of securities	1	19	71
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 2	$ 0
12 Months or Longer	0	1	43
Total	0	3	43
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	157,926	177,376	154,501
Available-for-Sale		178,588	157,641
Gross Unrealized Gains	3,806	2,236	3,350
Gross Unrealized Losses	4	1,024	210
Maturities of Debt Securities, at Amortized Cost
Within One Year	10,368
From 1 - 5 Years	137,109
From 5 - 10 Years	10,449
Over 10 Years	0
Maturities of Debt Securities at Fair Value
Within One Year	10,468
From 1 - 5 Years	140,293
From 5 - 10 Years	10,967
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	710	99,569	0
12 Months or Longer	0	903	47,859
Total	$ 710	$ 100,472	$ 47,859
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	$ 4	$ 1,023	$ 0
12 Months or Longer	0	1	210
Total	4	1,024	210
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	10,318	15,700	30,800
Available-for-Sale	10,401	15,845	31,700
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	147,608	161,676	123,700
Available-for-Sale	151,327	162,743	126,000
Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Securities, at Amortized Cost	5,749	14,544	16,910
Available-for-Sale		14,299	16,691
Gross Unrealized Gains	6	0	5
Gross Unrealized Losses	200	245	224
Maturities of Debt Securities, at Amortized Cost
Within One Year	3,248
From 1 - 5 Years	1,501
From 5 - 10 Years	0
Over 10 Years	1,000
Maturities of Debt Securities at Fair Value
Within One Year	3,251
From 1 - 5 Years	1,504
From 5 - 10 Years	0
Over 10 Years	800
Securities in a Continuous Loss Position, at Fair Value
Less than 12 Months	0	3,616	0
12 Months or Longer	2,281	10,671	10,232
Total	$ 2,281	$ 14,287	$ 10,232
Number of Securities in a Continuous Loss Position, in number of securities	3	19	14
Unrealized Losses on Securities in a Continuous Loss Position
Less than 12 Months	$ 0	$ 2	$ 0
12 Months or Longer	200	243	224
Total	200	245	224
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	1,245
Gross Unrealized Gains	111	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	362,929	402,309	391,817
Fair Value, Measurements, Recurring [Member] | U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	157,990	155,782	156,937
Fair Value, Measurements, Recurring [Member] | State and Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	36,425	52,408	59,303
Fair Value, Measurements, Recurring [Member] | Corporate and Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	5,555	14,299	16,691
Fair Value, Measurements, Recurring [Member] | Mutual Funds and Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-Sale	$ 1,231	$ 1,232	$ 1,245