| Change in Accumulated Other Comprehensive Income | 
        
 
		
			The change in accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2014 is summarized as follows, net of tax (dollars in thousands):
		 
		
			 
		 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Unrealized Gains (Losses) on Securities 
				 | 
				
					 
						  
				 | 
				
					 
						Change in Fair Value of Cash Flow Hedge 
				 | 
				
					 
						  
				 | 
				
					 
						Total 
				 | 
			 
			
				| 
					 
						Balance - June 30, 2014 
				 | 
				
					 
						$ 
				 | 
				
14,202 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(3,321)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
10,881 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
1,798 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(228)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
1,570 
				 | 
			 
			
				| 
					 
						Amounts reclassified from accumulated other comprehensive income 
				 | 
				
					 
						  
				 | 
				
(647)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
164 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(483)
				 | 
			 
			
				| 
					 
						Net current period other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
1,151 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(64)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
1,087 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Balance - September 30, 2014 
				 | 
				
					 
						$ 
				 | 
				
15,353 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(3,385)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
11,968 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
		  
		
			 
		 
		
			 
		 
		
			 
		 
		
			 
		 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Unrealized Gains (Losses) on Securities 
				 | 
				
					 
						  
				 | 
				
					 
						Change in Fair Value of Cash Flow Hedges 
				 | 
				
					 
						  
				 | 
				
					 
						Total 
				 | 
			 
			
				| 
					 
						Balance - December 31, 2013 
				 | 
				
					 
						$ 
				 | 
				
1,192 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(3,382)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(2,190)
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Other comprehensive income 
				 | 
				
					 
						  
				 | 
				
14,843 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(431)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
14,412 
				 | 
			 
			
				| 
					 
						Amounts reclassified from accumulated other comprehensive income 
				 | 
				
					 
						  
				 | 
				
(682)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
428 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(254)
				 | 
			 
			
				| 
					 
						Net current period other comprehensive income 
				 | 
				
					 
						  
				 | 
				
14,161 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(3)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
14,158 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Balance - September 30, 2014 
				 | 
				
					 
						$ 
				 | 
				
15,353 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(3,385)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
11,968 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
		  
		
			 
		 
		
			 
		 
		
			 
		 
		
		 
		  
		
		 
		
			The change in accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2013 is summarized as follows, net of tax (dollars in thousands):
		 
		
			 
		 
		
			 
		 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Unrealized Gains (Losses) on Securities 
				 | 
				
					 
						  
				 | 
				
					 
						Change in Fair Value of Cash Flow Hedge 
				 | 
				
					 
						  
				 | 
				
					 
						Total 
				 | 
			 
			
				| 
					 
						Balance - June 30, 2013 
				 | 
				
					 
						$ 
				 | 
				
2,719 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(3,354)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(635)
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
(393)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
293 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(100)
				 | 
			 
			
				| 
					 
						Amounts reclassified from accumulated other comprehensive income 
				 | 
				
					 
						  
				 | 
				
(3)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
161 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
158 
				 | 
			 
			
				| 
					 
						Net current period other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
(396)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
454 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
58 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Balance - September 30, 2013 
				 | 
				
					 
						$ 
				 | 
				
2,323 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(2,900)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(577)
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
		  
		
			 
		 
		
			 
		 
		
			 
		 
		
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						Unrealized Gains (Losses) on Securities 
				 | 
				
					 
						  
				 | 
				
					 
						Change in Fair Value of Cash Flow Hedges 
				 | 
				
					 
						  
				 | 
				
					 
						Total 
				 | 
			 
			
				| 
					 
						Balance - December 31, 2012 
				 | 
				
					 
						$ 
				 | 
				
14,573 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(4,489)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
10,084 
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
(12,220)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
1,049 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(11,171)
				 | 
			 
			
				| 
					 
						Amounts reclassified from accumulated other comprehensive income 
				 | 
				
					 
						  
				 | 
				
(30)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
540 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
510 
				 | 
			 
			
				| 
					 
						Net current period other comprehensive income (loss) 
				 | 
				
					 
						  
				 | 
				
(12,250)
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
1,589 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
(10,661)
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Balance - September 30, 2013 
				 | 
				
					 
						$ 
				 | 
				
2,323 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(2,900)
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				
(577)
				 | 
			 
			
				| 
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
			 
		  
		
			 
		 
		
			 
		 
		
			 
		 
		
			 
		 
		
			 
		 
		
			 
		 
		  
	   
 |