Subsequent Events	3 Months Ended
Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 7. Subsequent Events On April 24, 2017, we amended and restated our loan agreement, or senior credit facility, with Silicon Valley Bank. As amended, the senior credit facility provides for (1) a $25.0 million revolving credit facility, with a $5.0 million letter of credit subfacility, (2) a $10.5 million term loan and (3) approximately $1.7 million aggregate principal amount of outstanding equipment loans. The revolving credit facility reflects a $10.0 million increase in revolver borrowing capacity and is no longer subject to a borrowing base. Consistent with the prior loan agreement, the term loan will amortize over 36 months beginning on June 1, 2017, following an initial interest-only period, and will mature on May 1, 2020. We retain the ability to prepay the term loan at any time, subject to a prepayment fee equal to 2.0% of the outstanding principal amount if prepaid on or before May 27, 2017, or 1.0% of the outstanding principal amount if prepaid after May 27, 2017, but on or before May 27, 2018. The senior credit facility also refinanced the current balance of the equipment loans outstanding in the principal amount of approximately $870,000, or the Equipment A Advance, and $815,000, or the Equipment B Advance, initially borrowed on September 20, 2016 and December 30, 2016, respectively. Beginning on May 1, 2017, the Equipment A Advance will continue to amortize over 29 months, maturing on September 1, 2019, and the Equipment B Advance will continue to amortize over 32 months, maturing on December 1, 2019. We may prepay the equipment loans in full at any time, subject to a prepayment fee equal to 2.0% of the principal amount of each equipment loan prepaid if such equipment loan is prepaid on or prior to the first anniversary of the date such equipment loan was initially borrowed, and 1.0% of the outstanding principal amount if prepaid after the first anniversary, but on or prior to the second anniversary, of the date such equipment loan was initially borrowed. The loans accrue interest, at our option, at (1) a LIBOR rate determined in accordance with the senior credit facility, plus a margin of 2.75% or 3.25%, in the case of revolving borrowings, or 3.0% or 3.5%, in the case of the term loan and equipment loans, or (2) a prime rate determined in accordance with the senior credit facility, plus a margin of 0.0% or 0.5%, in the case of revolving borrowings, or 0.25% or 0.75%, in the case of the term loan and equipment loans, in each case with such margin determined based on our adjusted EBITDA for the preceding 12 month period. Interest is due and payable in arrears monthly for prime rate loans and at the end of an interest period for LIBOR rate loans. We are also obligated to pay other customary closing fees, commitment fees and letter of credit fees for a facility of this size and type. Our obligations under the senior credit facility are collateralized by substantially all of our assets other than intellectual property. All of our future subsidiaries are required to become co-borrowers under the senior credit facility. The guarantees by future subsidiaries are and will be collateralized by substantially all of the assets of such subsidiaries. If our cash in accounts maintained with the lender, plus availability under the revolving credit facility, falls below $50.0 million, the senior credit facility requires that we maintain compliance with (1) maximum adjusted EBITDA loss for the twelve month period ending as of the last day of each fiscal quarter of not greater than $7.5 million and (2) a ratio of unrestricted cash in accounts maintained with the lender plus net accounts receivable, to debt owed to the lender, of not less than 1.5 to 1.0. The senior credit facility contains customary events of default and affirmative and negative covenants, including, among others, covenants limiting our and our subsidiaries’ ability to dispose of assets, have a change of control, merge with or acquire other entities, incur indebtedness, pay dividends, grant liens on their assets, make distributions to holders of their capital stock, make investments or engage in transactions with their affiliates, in each case subject to customary exceptions.

Note 7. Subsequent Events

On April 24, 2017, we amended and restated our loan agreement, or senior credit facility, with Silicon Valley Bank. As amended, the senior credit facility provides for (1) a $25.0 million revolving credit facility, with a $5.0 million letter of credit subfacility, (2) a $10.5 million term loan and (3) approximately $1.7 million aggregate principal amount of outstanding equipment loans. The revolving credit facility reflects a $10.0 million increase in revolver borrowing capacity and is no longer subject to a borrowing base. Consistent with the prior loan agreement, the term loan will amortize over 36 months beginning on June 1, 2017, following an initial interest-only period, and will mature on May 1, 2020. We retain the ability to prepay the term loan at any time, subject to a prepayment fee equal to 2.0% of the outstanding principal amount if prepaid on or before May 27, 2017, or 1.0% of the outstanding principal amount if prepaid after May 27, 2017, but on or before May 27, 2018.

The senior credit facility also refinanced the current balance of the equipment loans outstanding in the principal amount of approximately $870,000, or the Equipment A Advance, and $815,000, or the Equipment B Advance, initially borrowed on September 20, 2016 and December 30, 2016, respectively. Beginning on May 1, 2017, the Equipment A Advance will continue to amortize over 29 months, maturing on September 1, 2019, and the Equipment B Advance will continue to amortize over 32 months, maturing on December 1, 2019. We may prepay the equipment loans in full at any time, subject to a prepayment fee equal to 2.0% of the principal amount of each equipment loan prepaid if such equipment loan is prepaid on or prior to the first anniversary of the date such equipment loan was initially borrowed, and 1.0% of the outstanding principal amount if prepaid after the first anniversary, but on or prior to the second anniversary, of the date such equipment loan was initially borrowed.

The loans accrue interest, at our option, at (1) a LIBOR rate determined in accordance with the senior credit facility, plus a margin of 2.75% or 3.25%, in the case of revolving borrowings, or 3.0% or 3.5%, in the case of the term loan and equipment loans, or (2) a prime rate determined in accordance with the senior credit facility, plus a margin of 0.0% or 0.5%, in the case of revolving borrowings, or 0.25% or 0.75%, in the case of the term loan and equipment loans, in each case with such margin determined based on our adjusted EBITDA for the preceding 12 month period. Interest is due and payable in arrears monthly for prime rate loans and at the end of an interest period for LIBOR rate loans. We are also obligated to pay other customary closing fees, commitment fees and letter of credit fees for a facility of this size and type.

Our obligations under the senior credit facility are collateralized by substantially all of our assets other than intellectual property. All of our future subsidiaries are required to become co-borrowers under the senior credit facility. The guarantees by future subsidiaries are and will be collateralized by substantially all of the assets of such subsidiaries.

If our cash in accounts maintained with the lender, plus availability under the revolving credit facility, falls below $50.0 million, the senior credit facility requires that we maintain compliance with (1) maximum adjusted EBITDA loss for the twelve month period ending as of the last day of each fiscal quarter of not greater than $7.5 million and (2) a ratio of unrestricted cash in accounts maintained with the lender plus net accounts receivable, to debt owed to the lender, of not less than 1.5 to 1.0.

The senior credit facility contains customary events of default and affirmative and negative covenants, including, among others, covenants limiting our and our subsidiaries’ ability to dispose of assets, have a change of control, merge with or acquire other entities, incur indebtedness, pay dividends, grant liens on their assets, make distributions to holders of their capital stock, make investments or engage in transactions with their affiliates, in each case subject to customary exceptions.