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DERIVATIVES (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 interestrateswaps | Dec. 31, 2010
Derivative [Line Items] |  |  |
Number of interest rate swaps |  | 1 |
Fair value of collateral pledged to secure interest rate contracts | $ 9,656,000 | $ 14,679,000 |
Gain on retirement of long-term obligations | 0 | 9,685,000 | 0
Loss on contract termination | 2,824,000 |  |
Accumulated other comprehensive loss relating to terminated swap | 11,002,000 |  |
Interest Rate Swap [Member] |  |  |
Derivative [Line Items] |  |  |
Incremental interest expense paid to interest rate swap counterparties | 3,095,000 | 4,577,000 | 5,869,000
AOCI expected to be reclassified into income over the next 12 montths | 1,937,000 |  |
2011 Swap [Member] |  |  |
Derivative [Line Items] |  |  |
Fixed rate payments, interest rate | 5.50% |  |
Basis dpread on variable rate | 1.75% |  |
Variable rate basis | 3-month LIBOR |  |
Outstanding trust preferred securities purchased and redeemed |  | 21,500,000 |
Notional amount | 93,500,000 | 93,500,000 |
Notional amount of interest rate derivatives |  | 115,000 |
2006 Swap [Member] |  |  |
Derivative [Line Items] |  |  |
Fixed rate payments, interest rate | 7.125% |  |
Basis dpread on variable rate | 1.75% |  |
Variable rate basis | 3-month LIBOR |  |
Notional amount |  | $ 115,000,000 |

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- Definition Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80784-113994 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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