Redeemable Convertible Preferred Stock and Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Temporary Equity And Stockholder's Equity [Abstract]

Fair Value Inputs, Instruments Classified in Shareholders' Equity, Quantitative Information

Significant unobservable inputs used in the determination of fair value of the Company’s redeemable convertible preferred stock for the three months ended March 31, 2017, when outstanding, included the following:

	Three Months Ended March 31, 2017
Valuation methodology:
Income approach (private company)	12.5%
Market approach (private company)	12.5%
PWERM (IPO)	60.0%
PWERM (M&A)	15.0%
IPO revenue multiple	2.8x-3.0x
Forecasted revenue growth rate	31.1%-40.0%
Discount rate	20.0%

Temporary Equity

The following table presents the accretion expense of the redeemable convertible preferred stock to its redemption value recorded within the consolidated statements of changes in redeemable convertible preferred stock and stockholders’ equity during the three months ended March 31, 2017:

	Three Months Ended March 31, 2017
Series A-1	$	(701	)
Series A-2	(18		)
Series A-3	(1,365		)
Series B	(5,451		)
Series C	(5,008		)
Series D	(4,286		)
Series E	(1,806		)
Series F	(3,121		)
Series G	(3,014		)
Total	$	(24,770	)

Schedule of Reserved Shares of Common Stock

The Company has reserved shares of common stock, on an as-converted basis, for future issuance as follows:

	March 31, 2018	December 31, 2017
2017 Equity Incentive Plan:
Stock options issued and outstanding	11,821,024	13,180,950
Restricted stock units outstanding	1,152,718	981,276
Shares available for future equity grants	7,011,507	7,026,071
Total	19,985,249	21,188,297
2017 Employee Stock Purchase Plan:
Shares reserved under employee stock purchase plan	2,414,688	1,600,000
Total	2,414,688	1,600,000