Investment Securities (Details) - Unrealized gains on investment securities - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	$ 194,619	$ 281,461
Investment Securities Available-for-Sale, Gross Unrealized Gains	2,271	8,596
Investment Securities Available-for-Sale, Gross Unrealized Losses	(1,120)	(525)
Investment Securities Available-for-Sale, Fair Value	195,770	289,532
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	224,056	224,682
Investment Securities Held-to-Maturity, Gross Unrealized Gains	6,793	6,858
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(291)	(95)
Investment Securities Held-to-Maturity, Fair Value	230,558	231,445
US Treasury Securities [Member]
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	28,471	28,264
Investment Securities Held-to-Maturity, Gross Unrealized Gains	$ 755	$ 920
Investment Securities Held-to-Maturity, Gross Unrealized Losses
Investment Securities Held-to-Maturity, Fair Value	$ 29,226	$ 29,184
Federal Agency Obligations [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	29,062	32,650
Investment Securities Available-for-Sale, Gross Unrealized Gains	142	217
Investment Securities Available-for-Sale, Gross Unrealized Losses	(58)	(50)
Investment Securities Available-for-Sale, Fair Value	29,146	32,817
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	33,616	27,103
Investment Securities Held-to-Maturity, Gross Unrealized Gains	280	322
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(119)	(28)
Investment Securities Held-to-Maturity, Fair Value	33,777	27,397
Residential Mortgage Backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	44,155	58,836
Investment Securities Available-for-Sale, Gross Unrealized Gains	803	1,531
Investment Securities Available-for-Sale, Gross Unrealized Losses	(48)	(11)
Investment Securities Available-for-Sale, Fair Value	44,910	60,356
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	3,805	5,955
Investment Securities Held-to-Maturity, Gross Unrealized Gains	11	28
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(6)
Investment Securities Held-to-Maturity, Fair Value	3,810	5,983
Commercial Mortgage Backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	$ 2,981	3,042
Investment Securities Available-for-Sale, Gross Unrealized Gains		4
Investment Securities Available-for-Sale, Gross Unrealized Losses	$ (9)
Investment Securities Available-for-Sale, Fair Value	2,972	3,046
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	4,110	4,266
Investment Securities Held-to-Maturity, Gross Unrealized Gains	27	50
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(2)
Investment Securities Held-to-Maturity, Fair Value	4,135	4,316
US States and Political Subdivisions Debt Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	8,188	8,201
Investment Securities Available-for-Sale, Gross Unrealized Gains	$ 169	205
Investment Securities Available-for-Sale, Gross Unrealized Losses
Investment Securities Available-for-Sale, Fair Value	$ 8,357	8,406
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	118,015	120,144
Investment Securities Held-to-Maturity, Gross Unrealized Gains	5,001	4,512
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(3)	(60)
Investment Securities Held-to-Maturity, Fair Value	123,013	124,596
Corporate Bonds And Notes [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	53,566	119,838
Investment Securities Available-for-Sale, Gross Unrealized Gains	702	5,950
Investment Securities Available-for-Sale, Gross Unrealized Losses	(292)	(11)
Investment Securities Available-for-Sale, Fair Value	53,976	125,777
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost	36,039	38,950
Investment Securities Held-to-Maturity, Gross Unrealized Gains	719	1,026
Investment Securities Held-to-Maturity, Gross Unrealized Losses	(161)	(7)
Investment Securities Held-to-Maturity, Fair Value	36,597	39,969
Trust Preferred Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	16,088	16,086
Investment Securities Available-for-Sale, Gross Unrealized Gains	398	489
Investment Securities Available-for-Sale, Gross Unrealized Losses	(231)	(269)
Investment Securities Available-for-Sale, Fair Value	16,255	16,306
Asset-backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	20,005	27,393
Investment Securities Available-for-Sale, Gross Unrealized Gains	18	140
Investment Securities Available-for-Sale, Gross Unrealized Losses	(298)	(31)
Investment Securities Available-for-Sale, Fair Value	19,725	27,502
Certificates of Deposit [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	1,895	2,098
Investment Securities Available-for-Sale, Gross Unrealized Gains	18	27
Investment Securities Available-for-Sale, Gross Unrealized Losses	(8)	(2)
Investment Securities Available-for-Sale, Fair Value	1,905	2,123
Equity Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	376	376
Investment Securities Available-for-Sale, Gross Unrealized Gains	21
Investment Securities Available-for-Sale, Gross Unrealized Losses	(23)	(69)
Investment Securities Available-for-Sale, Fair Value	374	307
Other Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	$ 18,303	12,941
Investment Securities Available-for-Sale, Gross Unrealized Gains		33
Investment Securities Available-for-Sale, Gross Unrealized Losses	$ (153)	(82)
Investment Securities Available-for-Sale, Fair Value	$ 18,150	$ 12,892