PARENT ONLY CONDENSED FINANCIAL STATEMENTS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 62,485	$ 61,320	$ 65,650	$ 109,148
Securities available for sale	867,760us-gaap_AvailableForSaleSecurities	891,106us-gaap_AvailableForSaleSecurities
Total assets	3,122,516us-gaap_Assets	2,847,209us-gaap_Assets
Liabilities
Subordinated debentures	41,239us-gaap_SubordinatedDebt	46,394us-gaap_SubordinatedDebt
Other liabilities	11,532us-gaap_OtherLiabilities	8,209us-gaap_OtherLiabilities
Total liabilities	2,761,854us-gaap_Liabilities	2,541,683us-gaap_Liabilities
Shareholders' equity	360,662us-gaap_StockholdersEquity	305,526us-gaap_StockholdersEquity	323,751us-gaap_StockholdersEquity	336,553us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	3,122,516	2,847,209
Parent Company
Assets
Cash and cash equivalents	6,322	11,667	7,102	8,022
Securities available for sale	149	399
Investment in subsidiaries	393,060	334,531
Other assets	5,490	7,028
Total assets	405,021	353,625
Liabilities
Subordinated debentures	41,239	46,394
Other liabilities	3,120	1,705
Total liabilities	44,359	48,099
Shareholders' equity	360,662	305,526
Total liabilities and shareholders' equity	$ 405,021	$ 353,625

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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