Credit Facility	6 Months Ended
Jun. 30, 2016
Line of Credit Facility [Abstract]
Credit Facility	Credit Facility In September 2013, we entered into a credit agreement with Royal Bank of Canada, JPMorgan Chase Bank, N.A. and Bank of America, N.A. as lenders. The credit agreement provides a three-year, $35.0 million, revolving credit facility, which includes a maximum $10.0 million letter of credit facility. We are required to pay quarterly facility fees of 0.45% per annum on the average daily unused portion of the revolving credit facility. We had no outstanding borrowings under this credit facility as of June 30, 2016 and December 31, 2015. The revolving credit facility expires on September 30, 2016. At our option, the revolving credit facility bears interest at a rate per annum based on either (i) an alternate base rate plus a margin ranging from 1.75% to 2.50% depending on our total leverage ratio, or (ii) the London interbank offered rate, or LIBOR, based on one, two, three or six month interest periods plus a margin ranging from 2.75% to 3.50% depending on our total leverage ratio. The alternate base rate is equal to the greatest of (i) the Royal Bank of Canada’s prime rate, (ii) the federal funds rate plus a margin equal to 0.50% and (iii) the Eurodollar rate for a one month interest period plus a margin equal to 1.00%. Our obligations under the credit agreement are secured by a security interest on substantially all of our assets, including our intellectual property. The credit agreement contains customary financial and non-financial covenants, which are described in Note 4, Credit Facility of the Notes to Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on March 1, 2016. We were in compliance with all financial and nonfinancial covenants under the revolving credit facility as of June 30, 2016.

Credit Facility

In September 2013, we entered into a credit agreement with Royal Bank of Canada, JPMorgan Chase Bank, N.A. and Bank of America, N.A. as lenders. The credit agreement provides a three-year, $35.0 million, revolving credit facility, which includes a maximum $10.0 million letter of credit facility. We are required to pay quarterly facility fees of 0.45% per annum on the average daily unused portion of the revolving credit facility. We had no outstanding borrowings under this credit facility as of June 30, 2016 and December 31, 2015. The revolving credit facility expires on September 30, 2016.

At our option, the revolving credit facility bears interest at a rate per annum based on either (i) an alternate base rate plus a margin ranging from 1.75% to 2.50% depending on our total leverage ratio, or (ii) the London interbank offered rate, or LIBOR, based on one, two, three or six month interest periods plus a margin ranging from 2.75% to 3.50% depending on our total leverage ratio. The alternate base rate is equal to the greatest of (i) the Royal Bank of Canada’s prime rate, (ii) the federal funds rate plus a margin equal to 0.50% and (iii) the Eurodollar rate for a one month interest period plus a margin equal to 1.00%.

Our obligations under the credit agreement are secured by a security interest on substantially all of our assets, including our intellectual property. The credit agreement contains customary financial and non-financial covenants, which are described in Note 4, Credit Facility of the Notes to Consolidated Financial Statements of our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on March 1, 2016. We were in compliance with all financial and nonfinancial covenants under the revolving credit facility as of June 30, 2016.