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
 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Allowance for loan losses:          
Balance, beginning of the year $ 32,384 $ 30,135      
Recoveries credited to allowance 1,696 2,171      
Loans charged off (7,035) (2,427)      
Provision charged to operations 5,299 1,500      
Balance, end of period 32,344 31,379      
Ending balance: individually evaluated for impairment     $ 1,610   $ 2,516
Ending balance: collectively evaluated for impairment     30,734   28,863
Total 32,384 30,135 32,344 $ 32,384 31,379
Loans:          
Ending balance: individually evaluated for impairment     95,215   112,667
Ending balance: collectively evaluated for impairment     5,327,329   4,989,295
Ending balance: loans acquired with deteriorated credit quality     87,841 105,788 131,107
Total loans     5,510,385 5,345,996 5,233,069
Commercial [Member]          
Allowance for loan losses:          
Balance, beginning of the year 22,352 19,908      
Recoveries credited to allowance 897 1,599      
Loans charged off (5,248) (1,068)      
Provision charged to operations 5,532 204      
Balance, end of period 23,533 20,643      
Ending balance: individually evaluated for impairment     1,463   2,117
Ending balance: collectively evaluated for impairment     22,070   18,526
Total 22,352 19,908 23,533 22,352 20,643
Loans:          
Ending balance: individually evaluated for impairment     90,917   104,620
Ending balance: collectively evaluated for impairment     3,831,592   3,482,781
Ending balance: loans acquired with deteriorated credit quality     77,519 94,235 114,893
Total loans     4,000,028   3,702,294
Consumer [Member]          
Allowance for loan losses:          
Balance, beginning of the year 10,032 10,227      
Recoveries credited to allowance 799 572      
Loans charged off (1,787) (1,359)      
Provision charged to operations (233) 1,296      
Balance, end of period 8,811 10,736      
Ending balance: individually evaluated for impairment     147   399
Ending balance: collectively evaluated for impairment     8,664   10,337
Total $ 10,032 $ 10,227 8,811 $ 10,032 10,736
Loans:          
Ending balance: individually evaluated for impairment     4,298   8,047
Ending balance: collectively evaluated for impairment     1,495,737   1,506,514
Ending balance: loans acquired with deteriorated credit quality     10,322   16,214
Total loans     $ 1,510,357   $ 1,530,775