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, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Allowance for loan losses:          
Balance, beginning of the year     $ 34,916 $ 39,470 $ 39,470
Recoveries credited to allowance     1,892 1,371 1,711
Loans charged off     (7,781) (9,847) (18,465)
Provision charged to operations 1,800 2,400 4,850 8,900 12,200
Balance, end of period 33,877 39,894 33,877 39,894 34,916
Ending balance: individually evaluated for impairment 7,061 13,706 7,061 13,706 8,502
Ending balance: collectively evaluated for impairment 26,816 26,059 26,816 26,059 26,292
Ending balance: loans acquired with deteriorated credit quality   129   129 122
Total 33,877 39,894 33,877 39,894 34,916
Loans:          
Ending balance: individually evaluated for impairment 115,296 171,432 115,296 171,432 150,810
Ending balance: collectively evaluated for impairment 2,882,999 2,730,641 2,882,999 2,730,641 2,811,472
Ending balance: loans acquired with deteriorated credit quality 3,951 6,437 3,951 6,437 4,565
Total Loans 3,002,246 2,908,510 3,002,246 2,908,510 2,966,847
Commercial [Member]
          
Allowance for loan losses:          
Balance, beginning of the year     24,821 27,891 27,891
Recoveries credited to allowance     1,051 490 589
Loans charged off     (4,775) (5,956) (12,852)
Provision charged to operations     3,200 7,301 9,193
Balance, end of period 24,297 29,726 24,297 29,726 24,821
Ending balance: individually evaluated for impairment 5,607 12,197 5,607 12,197 6,626
Ending balance: collectively evaluated for impairment 18,690 17,400 18,690 17,400 18,073
Ending balance: loans acquired with deteriorated credit quality   129   129 122
Total 24,297 29,726 24,297 29,726 24,821
Loans:          
Ending balance: individually evaluated for impairment 107,566 163,088 107,566 163,088 143,330
Ending balance: collectively evaluated for impairment 2,014,220 1,886,021 2,014,220 1,886,021 1,956,184
Ending balance: loans acquired with deteriorated credit quality 3,031 5,431 3,031 5,431 3,594
Total Loans 2,124,817 2,054,540 2,124,817 2,054,540 2,103,108
Consumer [Member]
          
Allowance for loan losses:          
Balance, beginning of the year     10,107 11,498 11,498
Recoveries credited to allowance     841 881 1,122
Loans charged off     (3,006) (3,891) (5,613)
Provision charged to operations     1,741 1,626 3,100
Balance, end of period 9,683 10,114 9,683 10,114 10,107
Ending balance: individually evaluated for impairment 1,454 1,509 1,454 1,509 1,876
Ending balance: collectively evaluated for impairment 8,229 8,605 8,229 8,605 8,231
Ending balance: loans acquired with deteriorated credit quality           
Total 9,683 10,114 9,683 10,114 10,107
Loans:          
Ending balance: individually evaluated for impairment 7,730 8,344 7,730 8,344 7,480
Ending balance: collectively evaluated for impairment 868,779 844,620 868,779 844,620 855,288
Ending balance: loans acquired with deteriorated credit quality 920 1,006 920 1,006 971
Total Loans 877,429 853,970 877,429 853,970 863,739
Unallocated [Member]
          
Allowance for loan losses:          
Balance, beginning of the year     (12) 81 81
Recoveries credited to allowance            
Loans charged off            
Provision charged to operations     (91) (27) (93)
Balance, end of period (103) 54 (103) 54 (12)
Ending balance: individually evaluated for impairment             
Ending balance: collectively evaluated for impairment (103) 54 (103) 54 (12)
Ending balance: loans acquired with deteriorated credit quality             
Total (103) 54 (103) 54 (12)
Loans:          
Ending balance: individually evaluated for impairment             
Ending balance: collectively evaluated for impairment             
Ending balance: loans acquired with deteriorated credit quality             
Total Loans