Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 46,054	$ 41,634
Accounts receivable	32,214	17,460
Prepaid expenses and other current assets	7,065	1,456
Total current assets	85,333	60,550
Property and equipment, net	5,197	4,481
Other assets	691	715
Total assets	91,221	65,746
Current liabilities:
Accounts payable	23,663	16,826
Accrued expenses and other current liabilities	13,225	3,099
Deferred revenue	1,501	1,440
Total current liabilities	38,389	21,365
Deferred rent, net of current portion	1,062	1,197
Total liabilities	39,451	22,562
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding
Additional paid-in capital	158,752	143,050
Accumulated deficit	(107,009)	(99,892)
Total stockholders' equity	51,770	43,184
Total liabilities and stockholders' equity	91,221	65,746
Class A Common Stock [Member]
Stockholders' equity:
Common stock	15	8
Total stockholders' equity	15	8
Class B Common Stock [Member]
Stockholders' equity:
Common stock	12	18
Total stockholders' equity	$ 12	$ 18