CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net loss	$ (56,335)	$ (10,539)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,535	1,344
Goodwill impairment	50,300	0
Stock-based compensation	3,186	3,977
Amortization and impairment of deferred commissions	2,383	2,491
Amortization and impairment of deferred professional service costs	925	969
Non-cash operating lease expense	1,400	1,282
Accretion and amortization of marketable securities	2	(126)
Changes in operating assets and liabilities:
Accounts receivable and other, net	(6,676)	(7,883)
Deferred commissions	(318)	(1,416)
Deferred professional service costs	(416)	(469)
Prepaid expenses and other assets	(494)	(751)
Accounts payable	(7,462)	(849)
Operating lease liabilities	(1,516)	(1,382)
Accrued expenses and other liabilities	19	(1,304)
Deferred revenue	3,573	3,495
Accrued compensation	(4,465)	(970)
Net cash used in operating activities	(14,359)	(12,131)
Investing activities:
Purchase of property and equipment	(1,264)	(204)
Purchase of marketable securities	(1,989)	0
Maturities of marketable securities	12,400	11,453
Net cash provided by investing activities	9,147	11,249
Financing activities:
Proceeds from exercise of stock options	155	1,680
Proceeds from ESPP offering	186	0
Principal payments on long-term debt	(465)	(465)
Net cash (used in) provided by financing activities	(124)	1,215
Net (decrease) increase in cash, cash equivalents and restricted cash	(5,336)	333
Cash, cash equivalents and restricted cash at beginning of period	44,342	67,330
Cash, cash equivalents and restricted cash at end of period	39,006	67,663
Reconciliation of cash, cash equivalents and restricted cash:
Total cash, cash equivalents and restricted cash	$ 39,006	$ 67,663