Debt	12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	Debt On December 19, 2018, the Company prepaid in full all outstanding indebtedness under, and terminated, the Loan and Security Agreement dated as of September 9, 2016, by and between the Company, Silicon Valley Bank as Agent and Silicon Valley Bank, MidCap Financial Trust, MidCap Funding III Trust and other lenders listed therein as lenders (SVB Loan Agreement), as amended December 30, 2016, May 9, 2017 and December 6, 2017, which termination was effective December 19, 2018. The debt financing consisted of a $15.0 million term loan which was drawn at the closing and up to $10.0 million of a revolving line of credit. The term loans were interest only (indexed to Wall Street Journal (WSJ) Prime plus 4.25%) until December 1, 2018 followed by 36 equal monthly payments of principal plus interest maturing December 6, 2021. Under the terms of the agreement, the revolving credit was limited to a borrowing base calculated using eligible accounts receivable and maturing December 6, 2021 with an interest rate indexed to WSJ Prime plus 1.25%. Warrants were issued to SVB and MidCap in conjunction with the modified debt agreement as discussed in note 12.

Debt

12 Months Ended

Dec. 31, 2018

On December 19, 2018, the Company prepaid in full all outstanding indebtedness under, and terminated, the Loan and Security Agreement dated as of September 9, 2016, by and between the Company, Silicon Valley Bank as Agent and Silicon Valley Bank, MidCap Financial Trust, MidCap Funding III Trust and other lenders listed therein as lenders (SVB Loan Agreement), as amended December 30, 2016, May 9, 2017 and December 6, 2017, which termination was effective December 19, 2018. The debt financing consisted of a $15.0 million term loan which was drawn at the closing and up to $10.0 million of a revolving line of credit. The term loans were interest only (indexed to Wall Street Journal (WSJ) Prime plus 4.25%) until December 1, 2018 followed by 36 equal monthly payments of principal plus interest maturing December 6, 2021. Under the terms of the agreement, the revolving credit was limited to a borrowing base calculated using eligible accounts receivable and maturing December 6, 2021 with an interest rate indexed to WSJ Prime plus 1.25%. Warrants were issued to SVB and MidCap in conjunction with the modified debt agreement as discussed in note 12.