Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 59,978	$ 102,754
Restricted cash	90	297
Investments	45,541	42,908
Accounts receivable, net	41,107	31,699
Prepaid expenses	4,890	2,563
Deferred costs	6,503	2,429
Other current assets	4,406	811
Total current assets	162,515	183,461
Property and equipment, net	4,650	2,796
Capitalized software development costs, net	12,893	10,005
Goodwill	48,382	31,328
Intangible assets, net	23,197	8,634
Deferred costs	10,265
Deferred tax assets	83
Other assets	195	189
Total assets	262,180	236,413
Current liabilities:
Accounts payable	2,719	2,446
Accrued payroll and employee related liabilities	17,108	11,111
Accrued expenses	5,565	1,825
Deferred revenue	92,738	70,090
Notes payable	427
Contingent consideration liabilities		682
Other current liabilities	1,490	808
Total current liabilities	120,047	86,962
Long-term liabilities:
Deferred revenue, noncurrent	2,898	2,982
Convertible senior notes	94,097	89,481
Deferred tax liabilities	1,032	482
Other long term liabilities	1,948	515
Total liabilities	220,022	180,422
Commitments and contingencies
Stockholders’ equity:
Preferred stock, par value $0.001, 10,000,000 shares authorized, no shares issued or outstanding as of December 31, 2018 and December 31, 2017, respectively
Common stock, $0.001 par value, 100,000,000 shares authorized, 29,700,192 and 28,330,460 shares issued and outstanding as of December 31, 2018 and December 31, 2017, respectively	30	28
Additional paid-in capital	194,866	164,995
Accumulated deficit	(147,670)	(109,252)
Accumulated other comprehensive (loss) income	(5,068)	220
Total stockholders’ equity	42,158	55,991
Total liabilities and stockholders’ equity	$ 262,180	$ 236,413