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Debt	9 Months Ended
	Sep. 30, 2011
Debt [Abstract]
Debt	NOTE 3. Debt On March 31, 2011, we amended our Credit Agreement which increased our maximum unsecured borrowing capacity from $10.0 million to $50.0 million and extended the term until March 2014. The interest rate under the Credit Agreement is equal to LIBOR plus 1.75%. The financial covenants require a minimum net worth of $300.0 million and a cash flow leverage ratio of not more than 2.0 to 1.0. The commitment fee charged on the unused line of credit is 0.375%. We have standby letters of credit that expire at various dates in 2011 and 2012. As of September 30, 2011, the outstanding letters of credit totaled $2.6 million. We had $47.4 million of unused and available borrowings under our bank revolving line of credit as of September 30, 2011. We were in compliance with our debt covenants as of September 30, 2011.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 3

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

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