Amount borrowed under the credit facility as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Amount of the required periodic payments of both interest and principal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

Reference 3: 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

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Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-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 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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- Definition

Credit Agreement Maturity Date

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Balance Type:	na
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- Definition

Line Of Credit Facility Borrowing Capitalized Amount

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Balance Type:	debit
Period Type:	instant

- Definition

Line Of Credit Facility Interest Rate Margin Maximum

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Line Of Credit Facility Interest Rate Margin Minimum

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- Definition

Percentage of obligations secured by pledge of stock.

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- Definition

Spread Over Variable Interest Rate

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Financing Debt (Narrative) (Details) (USD $)	6 Months Ended								6 Months Ended
Financing Debt (Narrative) (Details) (USD $)	Jun. 30, 2011	Jun. 30, 2011 Maximum [Member]	Jun. 30, 2011 Minimum [Member]	Jun. 30, 2011 Term Loan Facility [Member]	May 23, 2011 Term Loan Facility [Member]	May 23, 2011 Revolving Credit Facility [Member]	May 23, 2011 Letter Of Credit [Member]	May 23, 2011 Swingline Loans [Member]	Jun. 30, 2011 Euro Currency Rate [Member]	Jun. 30, 2011 Federal Funds Rate [Member]	Jun. 30, 2011 Consolidated Funded Indebtedness [Member]
Credit agreement loan	$ 511,000				$ 200,000	$ 700,000	$ 100,000	$ 20,000
Payment due for term loan facility	2,500
Capitalized amount of borrowing	6,200
Previous issuance costs, wrote off	700
Outstanding loan credit agreement	$ 150,000			$ 386,500
Interest rate margin, Minimum									1.25%		0.25%
Interest rate margin, Maximum									2.25%		1.25%
Consolidated funded indebtedness, rate									1.00%	0.50%
Quarterly commitment fee		0.40%	0.20%
Credit agreement maturity date	May 23, 2016
Interest rate on the credit facility	2.17%
Obligations under the Credit Agreement secured by pledge of stock percentage	65.00%