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SHORT-TERM BORROWINGS AND LONG-TERM DEBT (Details) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
LONG-TERM DEBT |  |
Short-term borrowings | $ 21,000,000 | $ 135,000,000
Long term borrowings | 92,785,000 | 92,785,000
Investment securities pledged as collateral | 1,100,000,000 | 1,050,000,000
Federal Home Loan Bank Borrowings |  |
LONG-TERM DEBT |  |
Line of Credit, maximum borrowing capacity | 1,439,149,367 | 1,412,190,268
Unused borrowings available | 1,420,000,000 | 1,280,000,000
Short-term borrowings | 21,000,000 | 135,000,000
Long term borrowings | 0 | 0
Investment securities pledged as collateral | 200,000 |
Commercial real estate and commercial loans pledged as collateral | 1,870,000,000 |
Federal Reserve discount window line of credit |  |
LONG-TERM DEBT |  |
Unused borrowings available | 68,100,000 | 63,700,000
Commercial real estate and commercial loans pledged as collateral | $ 129,900,000 | $ 129,900,000

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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