Convertible Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2016

Convertible Preferred Stock.

Schedule of convertible preferred stock

	Shares	Shares Issued and	Liquidation		Proceeds, net of
Series	Authorized	Outstanding	Amount		Issuance Costs
	(in thousands)
A-1	5,000	3,067	$	20	$	20
A	8,173	5,014		4,005		3,927
B	5,745	3,491		6,600		6,569
C	8,941	5,485		12,160		58,876
D	6,694	4,107		20,047		80,788
E	9,592	5,884		35,425		35,019
F	7,088	4,349		55,500		55,413
	51,233	31,397	$	133,757	$	240,612