Current Portion of Debt	6 Months Ended
Current Portion of Debt	Jun. 30, 2011
Current Portion of Debt [Abstract]
Current Portion of Debt	3. Current Portion of Debt The Company has an agreement with a consortium of lenders to provide up to $150.0 million of financing to the Company through a five-year, unsecured revolving credit facility (the “Credit Facility”), expiring on December 20, 2011. The agreement contains an expansion feature for the Company to increase the total financing available under the Credit Facility by up to $50.0 million to an aggregate of $200.0 million. Such increased financing would be provided by one or more existing Credit Facility lending institutions, subject to the approval of the lenders, and/or in combination with one or more new lending institutions, subject to the approval of the Credit Facility’s administrative agent. The Company expects to renew or replace the Credit Facility prior to its expiration. As of June 30, 2011, and December 31, 2010, the outstanding borrowings under the Credit Facility were $5.0 million and $53.0 million, respectively. Interest paid during each of the six-month periods ended June 30, 2011, and 2010, was $0.3 million and $0.5 million, respectively.

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.

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