Investment Securities (Details) - Unrealized gains on investment securities - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	$ 351,928	$ 194,619
Investment Securities Available-for-Sale, Gross Unrealized Gains	4,645	2,271
Investment Securities Available-for-Sale, Gross Unrealized Losses	(3,283)	(1,120)
Investment Securities Available-for-Sale, Fair Value	353,290	195,770
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		224,056
Investment Securities Held-to-Maturity, Gross Unrealized Gains		6,793
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(291)
Investment Securities Held-to-Maturity, Fair Value		231,445
Federal Agency Obligations [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	52,826	29,062
Investment Securities Available-for-Sale, Gross Unrealized Gains	282	142
Investment Securities Available-for-Sale, Gross Unrealized Losses	(271)	(58)
Investment Securities Available-for-Sale, Fair Value	52,837	29,146
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		33,616
Investment Securities Held-to-Maturity, Gross Unrealized Gains		280
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(119)
Investment Securities Held-to-Maturity, Fair Value		33,777
Residential Mortgage Backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	72,922	44,155
Investment Securities Available-for-Sale, Gross Unrealized Gains	519	803
Investment Securities Available-for-Sale, Gross Unrealized Losses	(944)	(48)
Investment Securities Available-for-Sale, Fair Value	72,497	44,910
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		3,805
Investment Securities Held-to-Maturity, Gross Unrealized Gains		11
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(6)
Investment Securities Held-to-Maturity, Fair Value		3,810
Commercial Mortgage Backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	4,186	2,981
Investment Securities Available-for-Sale, Gross Unrealized Gains	23
Investment Securities Available-for-Sale, Gross Unrealized Losses		(9)
Investment Securities Available-for-Sale, Fair Value	4,209	2,972
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		4,110
Investment Securities Held-to-Maturity, Gross Unrealized Gains		27
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(2)
Investment Securities Held-to-Maturity, Fair Value		4,135
US States and Political Subdivisions Debt Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	148,747	8,188
Investment Securities Available-for-Sale, Gross Unrealized Gains	2,789	169
Investment Securities Available-for-Sale, Gross Unrealized Losses	(931)
Investment Securities Available-for-Sale, Fair Value	150,605	8,357
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		118,015
Investment Securities Held-to-Maturity, Gross Unrealized Gains		5,001
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(3)
Investment Securities Held-to-Maturity, Fair Value		123,013
Trust Preferred Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	5,575	16,088
Investment Securities Available-for-Sale, Gross Unrealized Gains	242	398
Investment Securities Available-for-Sale, Gross Unrealized Losses	(151)	(231)
Investment Securities Available-for-Sale, Fair Value	5,666	16,255
Corporate Bonds And Notes [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	36,717	53,566
Investment Securities Available-for-Sale, Gross Unrealized Gains	586	702
Investment Securities Available-for-Sale, Gross Unrealized Losses	(375)	(292)
Investment Securities Available-for-Sale, Fair Value	36,928	53,976
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		36,039
Investment Securities Held-to-Maturity, Gross Unrealized Gains		719
Investment Securities Held-to-Maturity, Gross Unrealized Losses		(161)
Investment Securities Held-to-Maturity, Fair Value		36,597
Asset-backed Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	14,867	20,005
Investment Securities Available-for-Sale, Gross Unrealized Gains	2	18
Investment Securities Available-for-Sale, Gross Unrealized Losses	(286)	(298)
Investment Securities Available-for-Sale, Fair Value	14,583	19,725
Certificates of Deposit [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	973	1,895
Investment Securities Available-for-Sale, Gross Unrealized Gains	10	18
Investment Securities Available-for-Sale, Gross Unrealized Losses		(8)
Investment Securities Available-for-Sale, Fair Value	983	1,905
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	192	21
Investment Securities Available-for-Sale, Gross Unrealized Losses		(23)
Investment Securities Available-for-Sale, Fair Value	568	374
Other Securities [Member]
Investment securities available-for-sale
Investment Securities Available-for-Sale, Amortized Cost	14,739	18,303
Investment Securities Available-for-Sale, Gross Unrealized Gains
Investment Securities Available-for-Sale, Gross Unrealized Losses	(325)	(153)
Investment Securities Available-for-Sale, Fair Value	$ 14,414	18,150
US Treasury Securities [Member]
Investment securities held-to-maturity
Investment Securities Held-to-Maturity, Amortized Cost		28,471
Investment Securities Held-to-Maturity, Gross Unrealized Gains		755
Investment Securities Held-to-Maturity, Gross Unrealized Losses
Investment Securities Held-to-Maturity, Fair Value		$ 29,226

Available for sale securities gross unrealized gain accumulated in investments.

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Available for sale securities gross unrealized loss accumulated in investments.

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Held to maturity securities accumulated unrecognized holding gain.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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