Parent Only Condensed Financial Statements Condensed Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 77,328	$ 112,052	$ 52,956	$ 44,804
Total assets	1,192,183us-gaap_Assets	1,145,635us-gaap_Assets
Liabilities:
Junior subordinated debentures due to subsidiary grantor trust	5,155	5,155
Total liabilities	1,061,138us-gaap_Liabilities	1,025,592us-gaap_Liabilities
Shareholders’ equity:
Preferred stock, Series C	0us-gaap_PreferredStockValue	0us-gaap_PreferredStockValue
Common stock	54,216us-gaap_CommonStockValue	53,981us-gaap_CommonStockValue
Retained earnings	71,452	68,348
Accumulated other comprehensive income (loss), net of tax	5,377	(2,286)
Total shareholders' equity	131,045us-gaap_StockholdersEquity	120,043us-gaap_StockholdersEquity	117,665us-gaap_StockholdersEquity	107,482us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	1,192,183	1,145,635
Parent Company
ASSETS
Cash and cash equivalents	368	385	2,807	969
Investment in Bank subsidiary	135,366	124,378
Other assets	589	523
Total assets	136,323	125,286
Liabilities:
Junior subordinated debentures due to subsidiary grantor trust	5,155	5,155
Other liabilities	123	88
Total liabilities	5,278	5,243
Shareholders’ equity:
Preferred stock, Series C	0	0
Common stock	54,216	53,981
Retained earnings	71,452	68,348
Accumulated other comprehensive income (loss), net of tax	5,377	(2,286)
Total shareholders' equity	131,045	120,043
Total liabilities and shareholders' equity	$ 136,323	$ 125,286

Investment in Bank subsidiary

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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