Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 183,729	$ 86,929
Accounts receivable, net	975	350
Advance to clients	1,508
Prepaid expenses and other assets	6,695	2,709
Total current assets	192,907	89,988
Property and equipment, net	8,128	6,755
Capitalized content development costs, net	18,121	13,155
Advance to clients, non-current	1,042	1,675
Prepaid expenses, non-current	7,099	643
Other non-current assets	3,744	823
Total assets	231,041	113,039
Current liabilities:
Accounts payable	4,544	2,293
Accrued compensation and related benefits	13,405	9,088
Accrued expenses and other liabilities	12,039	10,481
Deferred revenue	2,609	1,906
Total current liabilities	32,597	23,768
Non-current liabilities	2,655	1,260
Total liabilities	$ 35,252	$ 25,028
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized, 0 shares issued and outstanding as of December 31, 2015 and 2014
Common stock, $0.001 par value, 200,000,000 shares authorized, 45,776,455 shares issued and outstanding as of December 31, 2015; 40,735,069 shares issued and outstanding as of December 31, 2014	$ 46	$ 41
Additional paid-in capital	351,324	216,818
Accumulated deficit	(155,581)	(128,848)
Total stockholders' equity	195,789	88,011
Total liabilities, and stockholders' equity	$ 231,041	$ 113,039