Line of Credit	3 Months Ended
Mar. 31, 2017
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, Bank of America, N.A and Wells Fargo Bank, National Association. 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, effective as of January 2, 2015, pursuant to which the Company and the lenders 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. The Company and the lenders entered into a fourth amendment to the credit agreement (as amended, the “Credit Agreement”), effective as of June 24, 2016, pursuant to which the Company and the lenders, among other things, extended the maturity date for all amounts due and payable under the Credit Agreement from July 31, 2017 to July 31, 2018, reduced the applicable margin for certain borrowings by 0.25% and increased the thresholds for acquisitions by the Company permitted under the Credit Agreement. The Credit Agreement also allows for the issuance of letters of credit in the aggregate amount of up to $10.0 million at any one time; outstanding letters of credit reduce the credit available for revolving credit borrowings. As of March 31, 2017, the Company had no outstanding letters of credit. Substantially all of our assets are pledged to secure the credit facility. Borrowings under the Credit Agreement bear interest at our option of the prime rate (4.00% on March 31, 2017) plus a margin ranging from 0.00% to 0.50% or one-month LIBOR (0.98% on March 31, 2017) plus a margin ranging from 1.75% to 2.25%. The additional margin amount is dependent on the level of outstanding borrowings. As of March 31, 2017, we had $86.5 million of maximum borrowing capacity. We incur an annual commitment fee of 0.20% 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. Additionally, the credit agreement currently restricts the payment of dividends. At March 31, 2017, 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, Bank of America, N.A and Wells Fargo Bank, National Association. 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, effective as of January 2, 2015, pursuant to which the Company and the lenders 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. The Company and the lenders entered into a fourth amendment to the credit agreement (as amended, the “Credit Agreement”), effective as of June 24, 2016, pursuant to which the Company and the lenders, among other things, extended the maturity date for all amounts due and payable under the Credit Agreement from July 31, 2017 to July 31, 2018, reduced the applicable margin for certain borrowings by 0.25% and increased the thresholds for acquisitions by the Company permitted under the Credit Agreement.

The Credit Agreement also allows for the issuance of letters of credit in the aggregate amount of up to $10.0 million at any one time; outstanding letters of credit reduce the credit available for revolving credit borrowings. As of March 31, 2017, the Company had no outstanding letters of credit. Substantially all of our assets are pledged to secure the credit facility.

Borrowings under the Credit Agreement bear interest at our option of the prime rate (4.00% on March 31, 2017) plus a margin ranging from 0.00% to 0.50% or one-month LIBOR (0.98% on March 31, 2017) plus a margin ranging from 1.75% to 2.25%. The additional margin amount is dependent on the level of outstanding borrowings. As of March 31, 2017, we had $86.5 million of maximum borrowing capacity. We incur an annual commitment fee of 0.20% 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. Additionally, the credit agreement currently restricts the payment of dividends.

At March 31, 2017, the Company was in compliance with all covenants under the Credit Agreement.