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 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Allowance for loan losses:          
Balance, beginning of the year     $ 34,916 $ 39,470 $ 39,470
Recoveries credited to allowance     1,555 691 1,711
Loans charged off     (5,188) (5,676) (18,465)
Provision charged to operations 1,000 3,000 3,050 6,500 12,200
Balance, end of period 34,333 40,985 34,333 40,985 34,916
Ending balance: individually evaluated for impairment 6,102 11,279 6,102 11,279 6,799
Ending balance: collectively evaluated for impairment 28,224 29,485 28,224 29,485 27,995
Ending balance: loans acquired with deteriorated credit quality 7 221 7 221 122
Total 34,333 40,985 34,333 40,985 34,916
Loans:          
Ending balance: individually evaluated for impairment 118,425 182,624 118,425 182,624 137,850
Ending balance: collectively evaluated for impairment 2,878,457 2,698,391 2,878,457 2,698,391 2,824,432
Ending balance: loans acquired with deteriorated credit quality 3,973 6,775 3,973 6,775 4,565
Total Loans 3,000,855 2,887,790 3,000,855 2,887,790 2,966,847
Commercial [Member]
          
Allowance for loan losses:          
Balance, beginning of the year     24,821 27,891 27,891
Recoveries credited to allowance     944 127 589
Loans charged off     (2,970) (2,950) (12,852)
Provision charged to operations     1,713 5,485 9,193
Balance, end of period 24,508 30,553 24,508 30,553 24,821
Ending balance: individually evaluated for impairment 5,053 10,429 5,053 10,429 5,404
Ending balance: collectively evaluated for impairment 19,448 19,903 19,448 19,903 19,295
Ending balance: loans acquired with deteriorated credit quality 7 221 7 221 122
Total 24,508 30,553 24,508 30,553 24,821
Loans:          
Ending balance: individually evaluated for impairment 112,484 176,919 112,484 176,919 133,596
Ending balance: collectively evaluated for impairment 2,015,991 1,852,887 2,015,991 1,852,887 1,965,918
Ending balance: loans acquired with deteriorated credit quality 3,039 5,741 3,039 5,741 3,594
Total Loans 2,131,514 2,035,547 2,131,514 2,035,547 2,103,108
Consumer [Member]
          
Allowance for loan losses:          
Balance, beginning of the year     10,107 11,498 11,498
Recoveries credited to allowance     611 564 1,122
Loans charged off     (2,218) (2,726) (5,613)
Provision charged to operations     1,303 988 3,100
Balance, end of period 9,803 10,324 9,803 10,324 10,107
Ending balance: individually evaluated for impairment 1,049 850 1,049 850 1,395
Ending balance: collectively evaluated for impairment 8,754 9,474 8,754 9,474 8,712
Ending balance: loans acquired with deteriorated credit quality             
Total 9,803 10,324 9,803 10,324 10,107
Loans:          
Ending balance: individually evaluated for impairment 5,941 5,705 5,941 5,705 4,254
Ending balance: collectively evaluated for impairment 862,466 845,504 862,466 845,504 858,514
Ending balance: loans acquired with deteriorated credit quality 934 1,034 934 1,034 971
Total Loans 869,341 852,243 869,341 852,243 863,739
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     34 27 (93)
Balance, end of period 22 108 22 108 (12)
Ending balance: individually evaluated for impairment               
Ending balance: collectively evaluated for impairment 22 108 22 108 (12)
Ending balance: loans acquired with deteriorated credit quality               
Total 22 108 22 108 (12)
Loans:          
Ending balance: individually evaluated for impairment               
Ending balance: collectively evaluated for impairment               
Ending balance: loans acquired with deteriorated credit quality               
Total Loans