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DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Designated as Hedging Instrument |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | $ 200,000 |  |  |
Derivative assets | 998 | [1] |  |
Derivative liabilities | 639 | [1] |  |
Designated as Hedging Instrument | Interest rate swaps |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 200,000 |  |  |
Derivative assets | 998 | [1] |  |
Derivative liabilities | 639 | [1] |  |
Not Designated as Hedging Instrument |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 803,814 |  | 205,221 |
Derivative assets | 24,980 | [1] | 6,523 | [1]
Derivative liabilities | 23,525 | [1] | 4,498 | [1]
Not Designated as Hedging Instrument | Equity swap agreements |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 22,709 |  | 22,884 |
Derivative assets | 202 | [1] | 206 | [1]
Derivative liabilities | 204 | [1] | 210 | [1]
Not Designated as Hedging Instrument | Foreign exchange options |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 85,614 |  | 85,614 |
Derivative assets | 3,899 | [1] | 5,084 | [1]
Derivative liabilities | 2,430 | [1] | 3,239 | [1]
Not Designated as Hedging Instrument | Interest rate swaps |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 485,196 |  | 4,098 |
Derivative assets | 19,476 | [1] | 13 | [1]
Derivative liabilities | 19,924 | [1] | 14 | [1]
Not Designated as Hedging Instrument | Short-term Foreign Exchange |  |  |  |
Fair Values of Derivative Instruments |  |  |  |
Notional amount | 210,295 |  | 92,625 |
Derivative assets | 1,403 | [1] | 1,220 | [1]
Derivative liabilities | $ 967 | [1] | $ 1,035 | [1]
[1] | Derivative assets include the estimated gain to settle a derivative contract plus net interest receivable. Derivative liabilities include the estimated loss to settle a derivative contract.

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- Definition Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Aggregate notional amount of all derivatives. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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