Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2014 Security	Dec. 31, 2013 Security
Amortized cost and fair value of securities held-to-maturity [Abstract]
Amortized Cost	$ 95,506	$ 96,847
Gross Unrealized Gains	1,838	1,326
Gross Unrealized Losses	(333)	(720)
Securities held-to-maturity, fair value	97,011	97,453
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	160,922	163,695
Gross Unrealized Gains	402	350
Gross Unrealized Losses	(6,107)	(8,406)
Securities available-for-sale, at fair value	155,217	155,639
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	3,636	6,586
More Than Twelve Months	2,471	1,820
Total	6,107	8,406
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	104,136	119,178
More Than Twelve Months	30,202	20,234
Total	134,338	139,412
Securities Held-to-Maturity, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	329	715
More Than Twelve Months	4	5
Total	333	720
Securities Held-to-Maturity, Fair Value [Abstract]
Less than Twelve Months	16,504	23,765
More Than Twelve Months	96	95
Total	16,600	23,860
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Losses [Abstract]
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses	3,965	7,301
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses	2,475	1,825
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Aggregate Losses	6,440	9,126
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value [Abstract]
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Less Than 12 Months Fair Value	120,640	142,943
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position 12 Months Or Longer Fair Value	30,298	20,329
Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value	150,938	163,272
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Cause	caused by increases in market interest rates.
Number of Securities	97	107
Held-to-maturity securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	35	51
Available for sale and held to maturity securities, Number of positions	132	158
US Treasury securities [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Securities available-for-sale, at fair value	0	0
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	0	0
More Than Twelve Months	0	0
Total	0	0
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	0	0
More Than Twelve Months	0	0
Total	0	0
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	0	0
Obligations of U.S. Government agencies [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	14,961	15,189
Gross Unrealized Gains	256	263
Gross Unrealized Losses	(347)	(428)
Securities available-for-sale, at fair value	14,870	15,024
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	0	0
More Than Twelve Months	347	428
Total	347	428
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	0	0
More Than Twelve Months	4,260	4,403
Total	4,260	4,403
Securities Held-to-Maturity, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	0	0
More Than Twelve Months	4	5
Total	4	5
Securities Held-to-Maturity, Fair Value [Abstract]
Less than Twelve Months	0	0
More Than Twelve Months	96	95
Total	96	95
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	1	1
Held-to-maturity securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	1	1
Obligations of states and political subdivisions [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	50,732	51,032
Gross Unrealized Gains	144	86
Gross Unrealized Losses	(2,535)	(4,018)
Securities available-for-sale, at fair value	48,341	47,100
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	932	3,246
More Than Twelve Months	1,603	772
Total	2,535	4,018
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	22,639	36,235
More Than Twelve Months	16,656	6,450
Total	39,295	42,685
Securities Held-to-Maturity, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	329	715
More Than Twelve Months	0	0
Total	329	715
Securities Held-to-Maturity, Fair Value [Abstract]
Less than Twelve Months	16,504	23,765
More Than Twelve Months	0	0
Total	16,504	23,765
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	71	82
Held-to-maturity securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	34	50
Mortgage-backed securities [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	92,309	94,685
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3,185)	(3,935)
Securities available-for-sale, at fair value	89,124	90,750
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	2,668	3,321
More Than Twelve Months	517	614
Total	3,185	3,935
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	80,134	81,664
More Than Twelve Months	8,990	9,086
Total	89,124	90,750
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	12	12
Money market investments [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	722	691
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Securities available-for-sale, at fair value	722	691
Corporate bonds [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	2,098	2,098
Gross Unrealized Gains	2	1
Gross Unrealized Losses	(19)	(25)
Securities available-for-sale, at fair value	2,081	2,074
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	15	19
More Than Twelve Months	4	6
Total	19	25
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	1,284	1,279
More Than Twelve Months	296	295
Total	1,580	1,574
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	12	12
Debt Securities [Member]
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	3,615	6,586
More Than Twelve Months	2,471	1,820
Total	6,086	8,406
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	104,057	119,178
More Than Twelve Months	30,202	20,234
Total	134,259	139,412
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	96	107
Common Stock [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	100
Gross Unrealized Gains	0
Gross Unrealized Losses	(21)
Securities available-for-sale, at fair value	79
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	21	0
More Than Twelve Months	0	0
Total	21	0
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	79	0
More Than Twelve Months	0	0
Total	79	0
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities	1	0
Obligations of U.S. Government agencies [Member]
Amortized cost and fair value of securities held-to-maturity [Abstract]
Amortized Cost	400	400
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(4)	(5)
Securities held-to-maturity, fair value	397	396
Obligations of states and political subdivisions [Member]
Amortized cost and fair value of securities held-to-maturity [Abstract]
Amortized Cost	29,973	30,120
Gross Unrealized Gains	148	29
Gross Unrealized Losses	(329)	(715)
Securities held-to-maturity, fair value	29,792	29,434
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Amortized cost and fair value of securities held-to-maturity [Abstract]
Amortized Cost	65,133	66,327
Gross Unrealized Gains	1,689	1,296
Gross Unrealized Losses	0	0
Securities held-to-maturity, fair value	$ 66,822	$ 67,623

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