Investment Securities - Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	$ 462,413	$ 450,131
Gross Unrealized Gains	3,162	4,741
Gross Unrealized Losses	(6,758)	(3,937)
Fair Value	458,817	450,935
Obligations of U.S. government agencies
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	61,119	47,478
Gross Unrealized Gains	105	269
Gross Unrealized Losses	(581)	(429)
Fair Value	60,643	47,318
Mortgage-backed securities - U.S. government sponsored entities and agencies
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	242,203	246,561
Gross Unrealized Gains	857	986
Gross Unrealized Losses	(3,725)	(2,312)
Fair Value	239,335	245,235
Mortgage-backed securities - Non-agency
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	24,224	34,645
Gross Unrealized Gains	46
Gross Unrealized Losses	(33)	(328)
Fair Value	24,237	34,317
State and municipal securities
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	125,911	105,164
Gross Unrealized Gains	2,154	3,486
Gross Unrealized Losses	(2,234)	(244)
Fair Value	125,831	108,406
Asset backed securities
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total	8,956	16,183
Gross Unrealized Losses	(185)	(556)
Fair Value	$ 8,771	15,627
Other investments
Reconciliation of amortized cost to fair value of investment securities reported as available for sale
Total		100
Gross Unrealized Losses		(68)
Fair Value		$ 32

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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