Employees Pension and Postretirement Benefits (Details 1) (USD $) In Thousands	Jun. 30, 2011
SERP Benefits [Member]
Schedule of expected benefit payments
2011 (Six months remaining):	$ 0
2012	0
2013	18,813
2014	0
2015	0
Thereafter	0
Defined Benefit Plan Expected Future Benefit Payments	18,813
Postretirement Benefits [Member]
Schedule of expected benefit payments
2011 (Six months remaining):	13
2012	15
2013	31
2014	34
2015	38
Thereafter	353
Defined Benefit Plan Expected Future Benefit Payments	$ 484

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant