CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 33,686 $ 36,073
Accounts receivable, net of allowances of $147 and $124 as of March 31, 2018 and December 31, 2017, respectively 36,800 60,850
Prepaid expenses and other current assets 7,857 6,040
Deferred commissions 10,440 9,551
Total current assets 88,783 112,514
Deferred commissions, net of current portion 20,008 20,404
Property and equipment, net 12,796 12,459
Intangible assets, net 3,701 4,092
Goodwill 119,656 119,656
Other long-term assets 3,649 2,436
Total assets 248,593 271,561
Current liabilities:    
Accounts payable 2,858 2,481
Accrued expenses 16,542 18,846
Deferred revenue 123,746 130,165
Deferred rent 1,041 944
Total current liabilities 144,187 152,436
Deferred revenue, net of current portion 38,250 38,535
Warrant liability 5,647 2,766
Deferred rent, net of current portion 2,935 3,114
Deferred tax liability 37 33
Other long-term liabilities 42 42
Total liabilities 191,098 196,926
Convertible preferred stock 374,842 334,714
Stockholders' equity (deficit):    
Common stock, $0.001 par value; 156,650,000 shares authorized as of March 31, 2018 and December 31, 2017; 11,468,206 and 11,193,366 shares issued and 11,412,802 and 11,139,690 shares outstanding as of March 31, 2018 and December 31, 2017, respectively 11 11
Treasury stock, at cost, 55,404 and 53,676 shares as of March 31, 2018 and December 31, 2017, respectively (6) (6)
Additional paid-in capital   13,429
Accumulated deficit (317,352) (273,513)
Total stockholders' equity (deficit) (317,347) (260,079)
Total liabilities, redeemable convertible and convertible preferred stock and stockholders' equity (deficit) 248,593 271,561
Redeemable convertible preferred stock    
Current liabilities:    
Convertible preferred stock 373,243 333,204
Series A convertible preferred stock    
Current liabilities:    
Convertible preferred stock $ 1,599 $ 1,510