Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2015

Scenario Immediately Prior to IPO [Member]

Summary of Preferred Stock (in thousands, except share data)

			Per share		Aggregate
	Shares		liquidation		liquidation		Carrying
	Authorized	Outstanding	preference		preference		value
Series A	18,604,666	13,289,037	$	0.70	$	9,302	$	9,222
Series B	16,225,758	11,589,825		0.95		10,977		10,929
Series C	13,281,250	9,486,602		1.79		17,000		16,860
Series D	6,550,505	4,678,927		4.27		20,000		19,945
Series E	6,429,159	4,592,244		9.96		45,716		45,596
Series F	8,414,493	6,010,340		9.96		59,833		59,701
Total	69,505,831	49,646,975			$	162,828	$	162,253