Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenues	$ 11,476	$ 12,728
Cost of revenues	2,811	2,807
Gross Profit	8,665	9,921
Operating expenses:
Sales and marketing	10,723	9,592
General and administrative	5,287	4,599
Research and development	3,021	2,786
Total operating expenses	19,031	16,977
Loss from Operations	(10,366)	(7,056)
Other (income) expense:
Interest expense	1,523	919
Other (income) expense, net	(200)	(446)
Loss on extinguishment of debt	924
Net Loss	$ (12,613)	$ (7,529)
Net loss per share of common stock outstanding, basic and diluted	$ (0.68)	$ (0.42)
Weighted-average common shares outstanding, basic and diluted	18,681	18,026