| FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 | 
|---|---|---|
| ASSETS: | ||
| Interest rate swap | $ 1,279,000 | $ 33,000 | 
| Cash flow hedges | 420,000 | |
| Available for sale securities, estimated fair value | 1,094,777,000 | 677,348,000 | 
| LIABILITIES: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 5,102,000 | 3,562,000 | 
| Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| Available for sale securities, estimated fair value | ||
| LIABILITIES: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 420,000 | |
| Available for sale securities, estimated fair value | 1,094,777,000 | 677,348,000 | 
| LIABILITIES: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 5,102,000 | 3,562,000 | 
| Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| Available for sale securities, estimated fair value | ||
| LIABILITIES: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| Recurring [Member] | ||
| ASSETS: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 420,000 | |
| LIABILITIES: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 5,102,000 | 3,562,000 | 
| Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| LIABILITIES: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 420,000 | |
| LIABILITIES: | ||
| Interest rate swap | 1,279,000 | 33,000 | 
| Cash flow hedges | 5,102,000 | 3,562,000 | 
| Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| LIABILITIES: | ||
| Interest rate swap | ||
| Cash flow hedges | ||
| US Government Agencies Debt Securities [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 3,115,000 | 2,153,000 | 
| US Government Agencies Debt Securities [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 3,115,000 | 2,153,000 | 
| US Government Agencies Debt Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 3,115,000 | 2,153,000 | 
| US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Obligations of States and Political Subdivisions [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 432,897,000 | 254,830,000 | 
| Obligations of States and Political Subdivisions [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 432,897,000 | 254,830,000 | 
| Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 432,897,000 | 254,830,000 | 
| Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Corporate and Other Bonds [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 79,238,000 | 9,434,000 | 
| Corporate and Other Bonds [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 79,238,000 | 9,434,000 | 
| Corporate and Other Bonds [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Corporate and Other Bonds [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 79,238,000 | 9,434,000 | 
| Corporate and Other Bonds [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Mortgage Backed Securities [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 566,201,000 | 407,362,000 | 
| Mortgage Backed Securities [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 566,201,000 | 407,362,000 | 
| Mortgage Backed Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Mortgage Backed Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 566,201,000 | 407,362,000 | 
| Mortgage Backed Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Other Securities [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 13,326,000 | 3,569,000 | 
| Other Securities [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 13,326,000 | 3,569,000 | 
| Other Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Other Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | 13,326,000 | 3,569,000 | 
| Other Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Available for sale securities, estimated fair value | ||
| Mortgage Rate Lock Commitments [Member] | ||
| ASSETS: | ||
| Derivative assets | 731,000 | |
| Mortgage Rate Lock Commitments [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Derivative assets | ||
| Mortgage Rate Lock Commitments [Member] | Significant Other Observable Inputs Level 2 [Member] | ||
| ASSETS: | ||
| Derivative assets | ||
| Mortgage Rate Lock Commitments [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Derivative assets | 731,000 | |
| Mortgage Rate Lock Commitments [Member] | Recurring [Member] | ||
| ASSETS: | ||
| Derivative assets | 731,000 | |
| Mortgage Rate Lock Commitments [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | ||
| ASSETS: | ||
| Derivative assets | ||
| Mortgage Rate Lock Commitments [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | ||
| ASSETS: | ||
| Derivative assets | $ 731,000 |