Subsequent Events	3 Months Ended
Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	On April 30, 2018, the Company entered into a $15 million Senior Secured Credit Facility with Hercules Capital, Inc. (“Hercules”), a leader in customized debt financing for companies in technology and life sciences related markets. Under the terms of the facility, $5.0 million will be funded at closing with the balance available in two additional tranches over the term of the facility, subject to certain operating targets. The facility has an initial 36-month maturity and initial 10.5% interest rate. Pursuant to the loan agreement, the Company issued to Hercules at closing a warrant to purchase 81,818 shares of Class B common stock at an exercise price of $5.50 per share.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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