Convertible Preferred Stock (the "Preferred Stock") (Tables)

12 Months Ended

Dec. 31, 2016

Convertible Preferred Stock (the "Preferred Stock")

Schedule of Preferred Stock outstanding

			Common
	Shares	Shares	Shares Upon	Liquidation
December 31, 2014	Authorized	Outstanding	Conversion	Preference
Series A	418,634	418,634	1,628,498	$	5,232,925
Series A-1	53,957	53,957	282,689		918,955
Series B	263,839	263,839	1,790,050		5,768,378
Series C-1	18,287,483	18,267,759	7,991,496		15,253,579
Series D	12,339,204	12,339,204	5,397,962		18,600,005
Series E	6,227,169	6,227,169	2,724,165		15,000,005
Series F	12,889,000	12,882,377	5,635,580		57,139,783
	50,479,286	50,452,939	25,450,440	$	117,913,630

Schedule of conversion rights of Preferred Stock

					Number of Shares of
					Common Stock Issued
					for each Preferred Share
					Upon Conversion
	Original		Conversion		(= Original Issue Price/
Series of Preferred Stock	Issue Price		Price		Conversion Price)
Series F	$	4.4355	$	10.1391	0.4375
Series E	$	2.4088	$	5.5063	0.4375
Series D	$	1.5074	$	3.4458	0.4375
Series C-1	$	0.835	$	1.909	0.4375
Series B	$	12.95	$	1.909	6.7846
Series A-1	$	10.00	$	1.909	5.2391
Series A	$	7.425	$	1.909	3.8900