Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Allowance for loan losses:          
Balance, beginning of the year     $ 30,135 $ 34,916 $ 34,916
Recoveries credited to allowance     2,865 1,892 2,781
Loans charged off     (4,191) (7,781) (13,618)
Provision charged to operations 1,800 1,800 3,300 4,850 6,056
Balance, end of period 32,109 33,877 32,109 33,877 30,135
Ending balance: individually evaluated for impairment 4,105 7,061 4,105 7,061 1,963
Ending balance: collectively evaluated for impairment 28,004 26,816 28,004 26,816 28,172
Total 32,109 33,877 32,109 33,877 30,135
Loans:          
Ending balance: individually evaluated for impairment 134,165 115,296 134,165 115,296 108,999
Ending balance: collectively evaluated for impairment 4,917,095 2,882,999 4,917,095 2,882,999 2,926,747
Ending balance: loans acquired with deteriorated credit quality 119,743 3,951 119,743 3,951 3,622
Total loans 5,171,003 3,002,246 5,171,003 3,002,246 3,039,368
Commercial [Member]
         
Allowance for loan losses:          
Balance, beginning of the year     19,856 24,821 24,821
Recoveries credited to allowance     1,999 1,051 1,496
Loans charged off     (1,991) (4,775) (8,534)
Provision charged to operations     1,455 3,200 2,073
Balance, end of period 21,319 24,297 21,319 24,297 19,856
Ending balance: individually evaluated for impairment 3,183 5,607 3,183 5,607 1,152
Ending balance: collectively evaluated for impairment 18,136 18,690 18,136 18,690 18,704
Total 21,319 24,297 21,319 24,297 19,856
Loans:          
Ending balance: individually evaluated for impairment 125,310 107,566 125,310 107,566 101,894
Ending balance: collectively evaluated for impairment 3,430,451 2,014,220 3,430,451 2,014,220 2,059,079
Ending balance: loans acquired with deteriorated credit quality 106,021 3,031 106,021 3,031 2,732
Total loans 3,661,782 2,124,817 3,661,782 2,124,817 2,163,705
Consumer [Member]
         
Allowance for loan losses:          
Balance, beginning of the year     10,227 10,107 10,107
Recoveries credited to allowance     866 841 1,285
Loans charged off     (2,200) (3,006) (5,084)
Provision charged to operations     1,793 1,741 3,919
Balance, end of period 10,686 9,683 10,686 9,683 10,227
Ending balance: individually evaluated for impairment 922 1,454 922 1,454 811
Ending balance: collectively evaluated for impairment 9,764 8,229 9,764 8,229 9,416
Ending balance: loans acquired with deteriorated credit quality           
Total 10,686 9,683 10,686 9,683 10,227
Loans:          
Ending balance: individually evaluated for impairment 8,855 7,730 8,855 7,730 7,105
Ending balance: collectively evaluated for impairment 1,486,644 868,779 1,486,644 868,779 867,668
Ending balance: loans acquired with deteriorated credit quality 13,722 920 13,722 920 890
Total loans 1,509,221 877,429 1,509,221 877,429 875,663
Unallocated [Member]
         
Allowance for loan losses:          
Balance, beginning of the year     52 (12) (12)
Recoveries credited to allowance            
Loans charged off            
Provision charged to operations     52 (91) 64
Balance, end of period 104 (103) 104 (103) 52
Ending balance: individually evaluated for impairment             
Ending balance: collectively evaluated for impairment 104 (103) 104 (103) 52
Ending balance: loans acquired with deteriorated credit quality             
Total 104 (103) 104 (103) 52
Loans:          
Ending balance: individually evaluated for impairment             
Ending balance: collectively evaluated for impairment             
Ending balance: loans acquired with deteriorated credit quality             
Total loans