Parent Company Financial Statements (Statements of Condition) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
ASSETS        
Trading assets $ 2,457 $ 2,488    
Premises and equipment, net 23,886 25,727    
Investment in subsidiaries:        
Other assets 19,561 17,514    
Total assets 2,789,853 2,603,829    
LIABILITIES AND SHAREHOLDERS' EQUITY        
Junior subordinated debentures 44,024 43,922    
Accrued interest and other liabilities 35,645 28,817    
Shareholders’ equity 245,109 231,096 233,815 218,876
Total liabilities and shareholders’ equity 2,789,853 2,603,829    
Parent Company [Member]        
ASSETS        
Cash 23,259 21,788    
Trading assets 2,457 2,488    
Premises and equipment, net 0 4,797    
Investment in subsidiaries:        
Bank subsidiary 266,940 246,213    
Other subsidiary 9,450 8,733    
Amounts receivable from subsidiaries 25 2,062    
Investments in CCTA and UBCT 1,331 1,331    
Other assets 8,812 7,278    
Total assets 312,274 294,690    
LIABILITIES AND SHAREHOLDERS' EQUITY        
Amounts due to subsidiaries   5    
Junior subordinated debentures 44,024 43,922    
Accrued interest and other liabilities 23,141 19,667    
Shareholders’ equity 245,109 231,096    
Total liabilities and shareholders’ equity $ 312,274 $ 294,690