v3.8.0.1
Income Taxes - Other (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Components of loss before income taxes                      
United States                 $ (25,002) $ (20,684) $ (26,733)
Foreign                 (5,718)    
Loss before income taxes $ 186 $ (15,713) $ (11,754) $ (3,439) $ (2,209) $ (6,758) $ (8,337) $ (3,380) (30,720) $ (20,684) $ (26,733)
Deferred tax benefit                 $ 1,300    
Reconciliation between statutory federal income tax rate and the effective tax rate                      
U.S. statutory federal income tax rate (as a percent)                 35.00% 35.00% 35.00%
U.S. state income taxes, net of federal benefits (as a percent)                 9.90% 5.50% 7.70%
Foreign tax rate differential (as a percent)                 (1.40%)    
Non-deductible expenses (as a percent)                 (1.80%) (1.50%) (1.00%)
Stock-based compensation (as a percent)                 40.90% (2.90%) (1.00%)
Change in valuation allowance (as a percent)                 29.80% (36.60%) (39.10%)
Change in tax rate (as a percent)                 (108.00%)    
Other (as a percent)                 (0.20%) 0.50% (1.60%)
Effective tax rate (as a percent)                 4.20% 0.00% 0.00%
Deferred tax assets:                      
Accrued expenses and other 2,395       2,757       $ 2,395 $ 2,757  
Accrued compensation and related benefits 3,524       4,317       3,524 4,317  
Rebate reserve 20       126       20 126  
Deferred rent 6,924       1,028       6,924 1,028  
Stock-based compensation 6,874       7,127       6,874 7,127  
Deferred income 191               191    
Foreign net operating loss carryforwards 1,704               1,704    
U.S net operating loss carryforwards 69,425       61,995       69,425 61,995  
Valuation allowance (71,101)       (62,297)       (71,101) (62,297)  
Total deferred tax assets 19,956       15,053       19,956 15,053  
Deferred tax liabilities:                      
Prepaid expenses and other (355)       (1,524)       (355) (1,524)  
Capitalized content development costs (8,600)       (9,368)       (8,600) (9,368)  
Capitalized software development costs (4,356)       (3,848)       (4,356) (3,848)  
Property and equipment (4,720)       (313)       (4,720) (313)  
Intangibles (12,012)               (12,012)    
Total deferred tax liabilities (30,043)       $ (15,053)       (30,043) $ (15,053)  
Net deferred tax liabilities $ (10,087)               $ (10,087)