Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details)

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FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
ASSETS    
Cash and cash equivalents $ 148,692 $ 73,023
Securities available for sale 1,095,636 677,348
Restricted stock 48,554 26,036
Loans held for sale 30,857 53,185
Net loans 5,167,987 3,035,504
Interest rate swap 828 33
Cash flow hedges 33  
Accrued interest receivable 21,260 15,000
LIABILITIES    
Deposits 5,634,121 3,238,777
Borrowings 508,702 443,237
Accrued interest payable 1,963 902
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Carrying Value [Member]
   
ASSETS    
Cash and cash equivalents 148,692 73,023
Securities available for sale 1,095,636 677,348
Restricted stock 48,554 26,036
Loans held for sale 30,857 53,185
Net loans 5,138,894 3,009,233
Interest rate swap 828 33
Cash flow hedges 33  
Accrued interest receivable 21,260 15,000
LIABILITIES    
Deposits 5,634,050 3,236,842
Borrowings 527,679 463,314
Accrued interest payable 1,963 902
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS    
Cash and cash equivalents 148,692 73,023
Securities available for sale     
Restricted stock     
Loans held for sale     
Net loans     
Interest rate swap     
Cash flow hedges     
Accrued interest receivable     
LIABILITIES    
Deposits     
Borrowings     
Accrued interest payable     
Interest rate swap     
Cash flow hedges     
Significant Other Observable Inputs Level 2 [Member]
   
ASSETS    
Cash and cash equivalents     
Securities available for sale 1,095,636 677,348
Restricted stock 48,554 26,036
Loans held for sale 30,857 53,185
Net loans     
Interest rate swap 828 33
Cash flow hedges 33  
Accrued interest receivable 21,260 15,000
LIABILITIES    
Deposits 5,634,121 3,238,777
Borrowings 508,702 443,237
Accrued interest payable 1,963 902
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Significant Unobservable Inputs Level 3 [Member]
   
ASSETS    
Cash and cash equivalents     
Securities available for sale     
Restricted stock     
Loans held for sale     
Net loans 5,167,987 3,035,504
Interest rate swap     
Cash flow hedges     
Accrued interest receivable     
LIABILITIES    
Deposits     
Borrowings     
Accrued interest payable     
Interest rate swap     
Cash flow hedges     
Interest Rate Lock Commitments [Member]
   
ASSETS    
Derivative assets 612  
Interest Rate Lock Commitments [Member] | Carrying Value [Member]
   
ASSETS    
Derivative assets 612  
Interest Rate Lock Commitments [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS    
Derivative assets     
Interest Rate Lock Commitments [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS    
Derivative assets     
Interest Rate Lock Commitments [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS    
Derivative assets $ 612