Line of Credit	12 Months Ended
Dec. 31, 2014
Line of Credit [Abstract]
Line of Credit	9. Line of Credit On July 31, 2013, we renewed and extended the term of our credit agreement with Silicon Valley Bank ("SVB"), U.S. Bank National Association, and Bank of America, N.A. As renewed, the credit agreement provided for revolving credit borrowings up to a maximum principal amount of $75.0 million, subject to a commitment increase of $25.0 million. The Company and the Lenders entered into a first amendment to the credit agreement, effective as of May 7, 2014, pursuant to which the Company and the Lenders increased the amount of available borrowing capacity thereunder by $15.0 million, allowing for revolving credit borrowings up to a maximum principal amount of $90.0 million. The Company and the Lenders entered into a second amendment and consent to the credit agreement (as amended, the "Credit Agreement"), effective as of January 2, 2015, pursuant to which the Company and the Lenders, including Wells Fargo, National Association, as a new lender, increased the amount of available borrowing capacity thereunder by $35.0 million, allowing for revolving credit borrowings up to a maximum principal amount of $125.0 million, subject to an additional commitment increase of $50.0 million. Refer to Note 15, Subsequent Events, for further discussion. The Credit Agreement also allows for the issuance of letters of credit in the aggregate amount of up to $5.0 million at any one time; outstanding letters of credit reduce the credit available for revolving credit borrowings. As of December 31, 2014, the Company had one outstanding letter of credit in the amount of $0.2 million to secure an office space lease. Substantially all of our assets are pledged to secure the credit facility. All outstanding amounts owed under the Credit Agreement become due and payable no later than the final maturity date of July 31, 2017. Borrowings under the Credit Agreement bear interest at our option of SVB's prime rate (4.00% on December 31, 2014) plus a margin ranging from 0.00% to 0.50% or one-month LIBOR (0.17% on December 31, 2014) plus a margin ranging from 2.00% to 2.50%. The additional margin amount is dependent on the level of outstanding borrowings. As of December 31, 2014, we had $35.8 million of maximum borrowing capacity. We incur an annual commitment fee of 0.30% on the unused portion of the line of credit. The Company is required to comply with various financial covenants under the Credit Agreement. Specifically, the Company is required to maintain a ratio of earnings before interest, taxes, depreciation, and amortization ("EBITDA") plus stock compensation and minus income taxes paid and capital expenditures to interest expense and scheduled payments due for borrowings on a trailing three months basis annualized of not less than 2.00 to 1.00 and a ratio of current maturities of long-term debt to EBITDA plus stock compensation and minus income taxes paid and capital expenditures of not more than 2.75 to 1.00. At December 31, 2014, the Company was in compliance with all covenants under the Credit Agreement.

9. Line of Credit

On July 31, 2013, we renewed and extended the term of our credit agreement with Silicon Valley Bank ("SVB"), U.S. Bank National Association, and Bank of America, N.A. As renewed, the credit agreement provided for revolving credit borrowings up to a maximum principal amount of $75.0 million, subject to a commitment increase of $25.0 million. The Company and the Lenders entered into a first amendment to the credit agreement, effective as of May 7, 2014, pursuant to which the Company and the Lenders increased the amount of available borrowing capacity thereunder by $15.0 million, allowing for revolving credit borrowings up to a maximum principal amount of $90.0 million. The Company and the Lenders entered into a second amendment and consent to the credit agreement (as amended, the "Credit Agreement"), effective as of January 2, 2015, pursuant to which the Company and the Lenders, including Wells Fargo, National Association, as a new lender, increased the amount of available borrowing capacity thereunder by $35.0 million, allowing for revolving credit borrowings up to a maximum principal amount of $125.0 million, subject to an additional commitment increase of $50.0 million. Refer to Note 15, Subsequent Events, for further discussion.

The Credit Agreement also allows for the issuance of letters of credit in the aggregate amount of up to $5.0 million at any one time; outstanding letters of credit reduce the credit available for revolving credit borrowings. As of December 31, 2014, the Company had one outstanding letter of credit in the amount of $0.2 million to secure an office space lease. Substantially all of our assets are pledged to secure the credit facility.

All outstanding amounts owed under the Credit Agreement become due and payable no later than the final maturity date of July 31, 2017. Borrowings under the Credit Agreement bear interest at our option of SVB's prime rate (4.00% on December 31, 2014) plus a margin ranging from 0.00% to 0.50% or one-month LIBOR (0.17% on December 31, 2014) plus a margin ranging from 2.00% to 2.50%. The additional margin amount is dependent on the level of outstanding borrowings. As of December 31, 2014, we had $35.8 million of maximum borrowing capacity. We incur an annual commitment fee of 0.30% on the unused portion of the line of credit.

The Company is required to comply with various financial covenants under the Credit Agreement. Specifically, the Company is required to maintain a ratio of earnings before interest, taxes, depreciation, and amortization ("EBITDA") plus stock compensation and minus income taxes paid and capital expenditures to interest expense and scheduled payments due for borrowings on a trailing three months basis annualized of not less than 2.00 to 1.00 and a ratio of current maturities of long-term debt to EBITDA plus stock compensation and minus income taxes paid and capital expenditures of not more than 2.75 to 1.00.

At December 31, 2014, the Company was in compliance with all covenants under the Credit Agreement.