Long-term Debt	9 Months Ended
Sep. 30, 2011
Long-term Debt, Unclassified [Abstract]
Long-term Debt [Text Block]	Long-term Debt Line of Credit On March 18, 2011, we entered into a credit agreement with Wells Fargo Capital Finance, LLC and certain other lenders party thereto (the "Credit Agreement"). The Credit Agreement provides for cash borrowings and letters of credit under a $100 million senior secured revolving credit facility, the proceeds of which the Company may use for working capital and other general corporate purposes. Loans under the Credit Agreement will mature on September 15, 2014, subject to extension to March 18, 2016 under certain circumstances. In connection with the execution of the line of credit, the Company incurred approximately $1.7 million in debt issuance costs which will be amortized to interest expense over the length of the agreement. To date, the Company has not borrowed any amount under the Credit Agreement. Interest on the outstanding balance will accrue on outstanding loans under the Credit Agreement at a floating rate based on, at the Company's election, (i) LIBOR (subject to reserve requirements) or (ii) the greatest of (a) the Federal Funds Rate plus 1/2%, (b) three-month LIBOR plus 1% and (c) Wells Fargo Bank, National Association's prime rate (such greatest rate, the "Base Rate"), in each case, plus an applicable margin. The applicable margins with respect to LIBOR-based loans and Base Rate loans are 2.0% and 1.0%, respectively, and may increase or decrease based on the Company's total leverage ratio. The Company's obligations under the Credit Agreement are secured by a first priority lien on substantially all of the assets of the Company and the guarantors, which include the Company's material domestic subsidiaries. The Credit Agreement includes customary limitations on the Company's ability to, among other things, incur debt, grant liens, make acquisitions and other investments, make certain restricted payments such as dividend payments, dispose of assets or undergo a change of control. The Credit Agreement also requires the Company to maintain a minimum fixed charge ratio, a maximum total leverage ratio and, under certain circumstances, a minimum liquidity requirement.

Long-term Debt

Line of Credit

On March 18, 2011, we entered into a credit agreement with Wells Fargo Capital Finance, LLC and certain other lenders party thereto (the "Credit Agreement"). The Credit Agreement provides for cash borrowings and letters of credit under a $100 million senior secured revolving credit facility, the proceeds of which the Company may use for working capital and other general corporate purposes. Loans under the Credit Agreement will mature on September 15, 2014, subject to extension to March 18, 2016 under certain circumstances. In connection with the execution of the line of credit, the Company incurred approximately $1.7 million in debt issuance costs which will be amortized to interest expense over the length of the agreement. To date, the Company has not borrowed any amount under the Credit Agreement.

Interest on the outstanding balance will accrue on outstanding loans under the Credit Agreement at a floating rate based on, at the Company's election, (i) LIBOR (subject to reserve requirements) or (ii) the greatest of (a) the Federal Funds Rate plus 1/2%, (b) three-month LIBOR plus 1% and (c) Wells Fargo Bank, National Association's prime rate (such greatest rate, the "Base Rate"), in each case, plus an applicable margin. The applicable margins with respect to LIBOR-based loans and Base Rate loans are 2.0% and 1.0%, respectively, and may increase or decrease based on the Company's total leverage ratio.

The Company's obligations under the Credit Agreement are secured by a first priority lien on substantially all of the assets of the Company and the guarantors, which include the Company's material domestic subsidiaries. The Credit Agreement includes customary limitations on the Company's ability to, among other things, incur debt, grant liens, make acquisitions and other investments, make certain restricted payments such as dividend payments, dispose of assets or undergo a change of control. The Credit Agreement also requires the Company to maintain a minimum fixed charge ratio, a maximum total leverage ratio and, under certain circumstances, a minimum liquidity requirement.