Long-Term Debt	6 Months Ended
Jun. 30, 2014
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt — On November 8, 2011, we executed the First Amendment to our Amended and Restated Credit Agreement (“Amended Credit Agreement”) with Wells Fargo Capital Finance, LLC (“Wells Fargo”). The Amended Credit Agreement increased the amount of the revolving credit facility to $40.0 million. The maturity date for the revolving credit facility is September 3, 2015. We may make a London Interbank Offered Rate (“LIBOR”) election for any amount of our debt for a period of 1, 2 or 3 months at a time; however, we may not have more than 5 individual LIBOR loans in effect at any given time. We may only exercise the LIBOR rate election for an amount of at least $1.0 million. Borrowings under this facility are secured by a lien on substantially all of our existing assets, interests in assets and proceeds owned or acquired by us. As of June 30, 2014, we had no outstanding debt and the Amended Credit Agreement remains in effect with approximately $40.0 million of available borrowing capacity subject to maintaining a minimum liquidity threshold of $25.0 million and to reductions for outstanding letters of credit. The $25.0 million liquidity threshold can be satisfied by maintaining cash on hand or borrowing capacity under the Amended Credit Agreement. We are exposed to changes in interest rates should we have borrowings under the Amended Credit Agreement. The floating interest rate debt exposes us to interest rate risk, with the primary interest rate exposure resulting from changes in LIBOR. The definitive extent of the interest rate risk is not quantifiable or predictable because of the variability of future interest rates and business financing requirements. We do not customarily use derivative instruments to manage our interest rate risk profile. We are subject to certain financial covenants on a quarterly basis under the terms of the Amended Credit Agreement. These financial covenants consist of a leverage ratio and a fixed charge coverage ratio. We are in compliance with all of the required financial covenants as of June 30, 2014. We have also established control agreements with the financial institutions that maintain our cash and investment accounts. These agreements permit Wells Fargo to exercise control over our cash and investment accounts should we default under provisions of the Amended Credit Agreement. We are not in default under the Amended Credit Agreement and do not anticipate that Wells Fargo would need to exercise its rights under these control agreements during the term of the Amended Credit Agreement.

Long-Term Debt — On November 8, 2011, we executed the First Amendment to our Amended and Restated Credit Agreement (“Amended Credit Agreement”) with Wells Fargo Capital Finance, LLC (“Wells Fargo”). The Amended Credit Agreement increased the amount of the revolving credit facility to $40.0 million. The maturity date for the revolving credit facility is September 3, 2015. We may make a London Interbank Offered Rate (“LIBOR”) election for any amount of our debt for a period of 1, 2 or 3 months at a time; however, we may not have more than 5 individual LIBOR loans in effect at any given time. We may only exercise the LIBOR rate election for an amount of at least $1.0 million.

Borrowings under this facility are secured by a lien on substantially all of our existing assets, interests in assets and proceeds owned or acquired by us.

As of June 30, 2014, we had no outstanding debt and the Amended Credit Agreement remains in effect with approximately $40.0 million of available borrowing capacity subject to maintaining a minimum liquidity threshold of $25.0 million and to reductions for outstanding letters of credit. The $25.0 million liquidity threshold can be satisfied by maintaining cash on hand or borrowing capacity under the Amended Credit Agreement.

We are exposed to changes in interest rates should we have borrowings under the Amended Credit Agreement. The floating interest rate debt exposes us to interest rate risk, with the primary interest rate exposure resulting from changes in LIBOR. The definitive extent of the interest rate risk is not quantifiable or predictable because of the variability of future interest rates and business financing requirements. We do not customarily use derivative instruments to manage our interest rate risk profile.

We are subject to certain financial covenants on a quarterly basis under the terms of the Amended Credit Agreement. These financial covenants consist of a leverage ratio and a fixed charge coverage ratio. We are in compliance with all of the required financial covenants as of June 30, 2014.

We have also established control agreements with the financial institutions that maintain our cash and investment accounts. These agreements permit Wells Fargo to exercise control over our cash and investment accounts should we default under provisions of the Amended Credit Agreement. We are not in default under the Amended Credit Agreement and do not anticipate that Wells Fargo would need to exercise its rights under these control agreements during the term of the Amended Credit Agreement.