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Revolving Credit Facility	9 Months Ended
	Sep. 30, 2012
Debt Disclosure [Abstract]
Revolving Credit Facility	Revolving Credit Facility On September 11, 2012, the Company entered into an agreement to amend and restate its existing bank credit facility (the “Unsecured Credit Facility”). The number of commercial bank lenders participating in the facility increased from two to five lenders and the amount of the Unsecured Credit Facility was increased from $100,000,000 to $175,000,000. The Unsecured Credit Facility now bears interest at the prevailing LIBOR rate plus a fixed spread of 2.0% and matures in February 2015. Under the terms of the Unsecured Credit Facility, the Company is required to maintain certain financial ratios and comply with certain financial covenants. The Company's Unsecured Credit Facility contains provisions that allow the Company to repurchase stock and/or pay cash dividends within certain parameters and restricts the Company from pledging any of its assets as collateral against other indebtedness. The Company was in compliance with the requirements and covenants of the Unsecured Credit Facility as of September 30, 2012. The Company is required to pay an annual commitment fee of 0.375% on the average daily unused portion of the Unsecured Credit Facility commitment.

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- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20,22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



Reference 4: 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.

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