FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans	$ 16,000	$ 33,000
Available for sale securities, Estimated fair value	1,078,699,000	677,348,000	583,217,000
Liability, interest rate swap - loans	16,000	33,000
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans
Available for sale securities, Estimated fair value
Liability, interest rate swap - loans
Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans	16,000	33,000
Available for sale securities, Estimated fair value	1,078,699,000	677,348,000
Liability, interest rate swap - loans	16,000	33,000
Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans
Available for sale securities, Estimated fair value
Liability, interest rate swap - loans
Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans	16,000	33,000
Liability, interest rate swap - loans	16,000	33,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans
Liability, interest rate swap - loans
Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans	16,000	33,000
Liability, interest rate swap - loans	16,000	33,000
Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, interest rate swap - loans
Liability, interest rate swap - loans
US Government Agencies Debt Securities [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	3,174,000	2,153,000
US Government Agencies Debt Securities [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	3,174,000	2,153,000
US Government Agencies Debt Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	3,174,000	2,153,000
US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Obligations of States and Political Subdivisions [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	433,651,000	254,830,000
Obligations of States and Political Subdivisions [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	433,651,000	254,830,000
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	433,651,000	254,830,000
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Corporate and Other Bonds [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	72,622,000	9,434,000
Corporate and Other Bonds [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	72,622,000	9,434,000
Corporate and Other Bonds [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Corporate and Other Bonds [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	72,622,000	9,434,000
Corporate and Other Bonds [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Mortgage Backed Securities [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	555,963,000	407,362,000
Mortgage Backed Securities [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	555,963,000	407,362,000
Mortgage Backed Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Mortgage Backed Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	555,963,000	407,362,000
Mortgage Backed Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Other Securities [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	13,289,000	3,569,000
Other Securities [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	13,289,000	3,569,000
Other Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Other Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value	13,289,000	3,569,000
Other Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Available for sale securities, Estimated fair value
Trust Swaps [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Liability, Cash flow hedge - prime loan swap	3,784,000	3,046,000
Trust Swaps [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Liability, Cash flow hedge - prime loan swap
Trust Swaps [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Liability, Cash flow hedge - prime loan swap	3,784,000	3,046,000
Trust Swaps [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Liability, Cash flow hedge - prime loan swap
Prime Loan Swaps [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	13,000
Prime Loan Swaps [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets
Prime Loan Swaps [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	13,000
Prime Loan Swaps [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets
Prime Loan Swaps [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, Cash flow hedge - prime loan swap	13,000
Liability, Cash flow hedge - prime loan swap		516,000
Prime Loan Swaps [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, Cash flow hedge - prime loan swap
Liability, Cash flow hedge - prime loan swap
Prime Loan Swaps [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, Cash flow hedge - prime loan swap	13,000
Liability, Cash flow hedge - prime loan swap		516,000
Prime Loan Swaps [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Asset, Cash flow hedge - prime loan swap
Liability, Cash flow hedge - prime loan swap
Mortgage Rate Lock Commitments [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	538,000
Mortgage Rate Lock Commitments [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets
Mortgage Rate Lock Commitments [Member] | Significant Other Observable Inputs Level 2 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets
Mortgage Rate Lock Commitments [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	538,000
Mortgage Rate Lock Commitments [Member] | Recurring [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	538,000
Mortgage Rate Lock Commitments [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets
Mortgage Rate Lock Commitments [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
Fair value of assets and liabilities measured on a recurring basis:
Derivative assets	$ 538,000