EMPLOYEE BENEFIT PLANS (Details 8) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Defined Benefit Pension Plan
Estimated future benefit payments under defined benefit pension plan
2012	$ 8,770
2013	9,698
2014	9,448
2015	10,083
2016	11,420
2017-2021	67,686
Unfunded Excess Benefits Plan
Estimated future benefit payments under defined benefit pension plan
2012	2,984
2013	2,888
2014	2,880
2015	2,923
2016	3,152
2017-2021	$ 14,888

The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant