FAIR VALUE DISCLOSURES (Details) (Fair Value, Measurements, Recurring [Member], USD $) | Sep. 30, 2013 | Dec. 31, 2012 |
In Thousands, unless otherwise specified |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | $1,651,471 | $2,126,271 |
Liabilities, Fair Value Disclosure, Recurring | 6,268 | 6,530 |
U.S. Government sponsored agencies [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 276,034 | 310,429 |
Residential mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,098,229 | 1,534,067 |
Commercial mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 868 | 915 |
State and political subdivisions [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 32,261 | 4,929 |
Corporate notes [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 195,439 | 192,365 |
Equity investments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,456 | 1,022 |
Mortgage loans held for sale [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 28,313 | 66,133 |
Customer interest rate swap agreements [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 7 | 87 |
Liabilities, Fair Value Disclosure, Recurring | 7 | 87 |
Interest rate lock commitments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 743 | 1,837 |
Forward commitments to sell mortgage-backed securities [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | -637 | -305 |
Servicing rights [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 18,758 | 14,792 |
Nonqualified deferred compensation plan [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Liabilities, Fair Value Disclosure, Recurring | 6,261 | 6,443 |
Fair Value, Inputs, Level 1 [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,456 | 1,022 |
Liabilities, Fair Value Disclosure, Recurring | 6,261 | 6,443 |
Fair Value, Inputs, Level 1 [Member] | U.S. Government sponsored agencies [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Residential mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Commercial mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | State and political subdivisions [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Corporate notes [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Equity investments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,456 | 1,022 |
Fair Value, Inputs, Level 1 [Member] | Mortgage loans held for sale [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Customer interest rate swap agreements [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Liabilities, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Interest rate lock commitments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Forward commitments to sell mortgage-backed securities [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Servicing rights [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Nonqualified deferred compensation plan [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Liabilities, Fair Value Disclosure, Recurring | 6,261 | 6,443 |
Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,631,257 | 2,110,457 |
Liabilities, Fair Value Disclosure, Recurring | 7 | 87 |
Fair Value, Inputs, Level 2 [Member] | U.S. Government sponsored agencies [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 276,034 | 310,429 |
Fair Value, Inputs, Level 2 [Member] | Residential mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 1,098,229 | 1,534,067 |
Fair Value, Inputs, Level 2 [Member] | Commercial mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 868 | 915 |
Fair Value, Inputs, Level 2 [Member] | State and political subdivisions [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 32,261 | 4,929 |
Fair Value, Inputs, Level 2 [Member] | Corporate notes [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 195,439 | 192,365 |
Fair Value, Inputs, Level 2 [Member] | Equity investments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Mortgage loans held for sale [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 28,313 | 66,133 |
Fair Value, Inputs, Level 2 [Member] | Customer interest rate swap agreements [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 7 | 87 |
Liabilities, Fair Value Disclosure, Recurring | 7 | 87 |
Fair Value, Inputs, Level 2 [Member] | Interest rate lock commitments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 743 | 1,837 |
Fair Value, Inputs, Level 2 [Member] | Forward commitments to sell mortgage-backed securities [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | -637 | -305 |
Fair Value, Inputs, Level 2 [Member] | Servicing rights [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Nonqualified deferred compensation plan [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Liabilities, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 18,758 | 14,792 |
Liabilities, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | U.S. Government sponsored agencies [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Residential mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Commercial mortgage-backed [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | State and political subdivisions [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Corporate notes [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Equity investments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Mortgage loans held for sale [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Customer interest rate swap agreements [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Liabilities, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Interest rate lock commitments [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Forward commitments to sell mortgage-backed securities [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] | Servicing rights [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Assets, Fair Value Disclosure, Recurring | 18,758 | 14,792 |
Fair Value, Inputs, Level 3 [Member] | Nonqualified deferred compensation plan [Member] | ' | ' |
Fair Value, Assests and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | ' |
Liabilities, Fair Value Disclosure, Recurring | $0 | $0 |